BM Boulanger common mistakes
BM Boulanger · Understand the traps and how to avoid them.
Calculating the selling price of a baguette or croissant by adding a flat percentage to the raw-material cost only (for example adding 30% to the flour cost), then presenting that figure as the price, without including labour, energy, rent, depreciation or the viennoiserie's own butter and lamination costs in the cost breakdown.
Candidates learn the 'coefficient multiplicateur' as a single number and apply it mechanically to the ingredient cost because it is the only figure they can compute quickly under time pressure. They confuse 'prix de revient' (full cost) with 'coût matière' (material cost), and in artisan baking the material share is often only 15–25% of the true cost, so the resulting price is structurally too low.
What to do instead
Build a full cost sheet before any coefficient is applied: material cost per unit, direct labour (minutes of work × hourly cost including social charges), a share of energy (oven consumption per batch), a share of fixed costs (rent, insurance, depreciation of the fournil equipment) and wastage/crumble allowance. Then add the target margin on top of that total, and only afterwards sanity-check with the trade's usual coefficient. In the exam, show the intermediate lines, not just the final price.
Treating the HACCP plan as a document to be recited rather than a reasoning exercise: listing the seven principles in order but failing to identify the actual critical control points of a bakery process, or naming 'the oven' as a CCP without giving a measurable critical limit.
HACCP is often memorised from a summary table. Candidates reproduce the principles but have never built a flow diagram for their own production, so they cannot say where biological, chemical or physical hazards are actually controlled in a bakery. Baking is a genuine kill step for vegetative pathogens, but cooling, cream fillings, custards and post-bake handling are where the real risks sit - and these are the points candidates omit.
What to do instead
Practise constructing a flow diagram for two or three products (a cream-filled éclair, a raw-milk custard tart, a sourdough loaf) and mark hazards at each step. For each CCP state the hazard, the critical limit with a number (core temperature and time, cooling rate, pH or water activity where relevant), the monitoring method and frequency, the corrective action, and the verification record. Remember that a CCP must have a measurable limit and a named person responsible for monitoring.
Answering a fermentation or dough question with a single cause. For example, asked why a dough is slack, dense or has a torn crust, the candidate writes 'the yeast was dead' or 'the flour was bad' and stops, rather than working through the interacting variables.
Bread faults are multi-causal and candidates under exam pressure default to the most memorable cause they have heard in the workshop. They have not internalised the variables as a checklist (flour strength and W value, hydration, salt level, dough temperature, yeast quantity and viability, kneading intensity, fermentation time and temperature, shaping tension, proofing conditions, oven steam and heat).
What to do instead
Structure every diagnosis around a fixed sequence: raw materials → formula and hydration → mixing and dough temperature → fermentation and proofing → shaping → baking. For each variable, state what happens if it is too high or too low, and give the observable symptom. In the exam, name at least three plausible causes, rank them by likelihood given the details in the question, and say what test or observation would discriminate between them.
Producing a staff rota or payroll answer that ignores the legal working-time framework: scheduling a baker for a split shift with no mention of the daily and weekly rest, the maximum daily and weekly hours, the break after a set number of consecutive hours, or the premium for Sunday and public-holiday work.
Candidates manage rotas as a pure coverage puzzle - who can cover the 4 a.m. bake - and treat labour law as a separate topic. In a bakery the production day starts before dawn, so night work, Sunday work and the 35-hour reference framework interact constantly, and candidates have often never seen the actual clauses of their collective agreement.
What to do instead
For every rota question, annotate the schedule with the legal checks: daily rest, weekly rest, maximum daily and weekly duration, break entitlement, and any night or Sunday premium. State explicitly which items come from the code du travail and which from the applicable collective agreement, and flag where the two differ. If the question gives a specific convention collective, apply its provisions rather than generic figures.
Confusing turnover with cash and profit with solvency in the financial-management questions: presenting a healthy chiffre d'affaires as proof the bakery is doing well, or omitting VAT treatment, depreciation and the owner's remuneration from a projected income statement.
Candidates without bookkeeping practice equate sales with money available. Bakeries are cash-intensive, sell partly through card and partly cash, hold stock of perishable raw materials, and carry heavy equipment depreciation; a busy shop can still run out of cash. The distinction between résultat (profit) and trésorerie (cash) is rarely internalised.
What to do instead
Always build three linked statements in the answer: the income statement (with depreciation and the owner's or manager's remuneration shown as a cost), the cash plan month by month, and the break-even calculation. Compute the seuil de rentabilité from fixed costs and the margin on variable costs, and state the assumptions. When a question gives a VAT rate, show the HT/TTC conversion explicitly rather than mixing the two.
Answering a customer-complaint or sales scenario with generic courtesy ('remain polite, listen to the customer') and no commercial decision: no replacement, refund, credit note or gesture, no threshold of authority, no follow-up, and no distinction between a legitimate complaint and an unjustified claim.
Candidates treat the scenario as a test of good manners rather than a commercial procedure. They have not been taught the escalation logic - what a sales assistant may decide alone, what requires the manager, and how the resolution is recorded - so the answer stays abstract and unactionable.
What to do instead
Answer with a short procedure: acknowledge and listen without interrupting, establish the facts (product, date, batch, storage conditions), decide the remedy according to a stated policy (exchange, refund, credit note), state who is authorised to grant each remedy, record the complaint and its cause, and feed it back into production or HACCP records if it is a quality issue. Distinguish a justified defect, an ambiguous case and an abusive claim, and give the response appropriate to each.
Writing the professional French section in a familiar or workshop register: contracted forms, missing agreements of the past participle, confusion of 'ces/ses', 'sa/ça', and answers that are correct in substance but written as bullet fragments with no linking words or structure.
Candidates transfer the spoken register of the fournil into written answers and underestimate how heavily the expression is marked. Under time pressure they drop accents and agreements, and they do not plan the structure of a longer written answer before starting.
What to do instead
Practise short written productions under timed conditions - a note to a supplier, a reply to a customer complaint, a summary of a technical procedure - using a fixed plan: context, facts, action, closing. Reserve three minutes at the end of the exam to proofread specifically for past-participle agreement, plural agreement, accents and homophones, checking each one in turn rather than reading for meaning.
Ignoring the legal and regulatory framing of opening or taking over a business: describing the shop, the products and the marketing plan but omitting the registration formalities, the required diplomas or qualification for the trade, the hygiene approval or declaration, the labelling obligations, the lease regime and the insurance.
Candidates focus on the visible, operational side of a bakery and treat the legal section as paperwork to mention in passing. In France, opening a bakery involves specific obligations (declaration of activity, qualification or experience requirement for the trade, hygiene declaration, allergen and ingredient labelling, lease and licensing for the premises) and a business plan that omits them is unbankable.
What to do instead
Keep a one-page checklist of the formalities for a bakery opening or takeover and apply it to every case-study question: legal structure, registration, professional qualification or experience, hygiene declaration, labelling and allergens, lease and premises compliance, insurance, employment obligations. Name the obligation and the authority involved, and state the consequence of non-compliance.
Treating raw materials as fixed categories rather than functional ingredients: describing flours only by type number (T55, T65, T80) without linking them to protein content, W value or intended use, and describing sourdough, poolish or levain without explaining their effect on acidity, aroma, keeping quality or dough strength.
Candidates memorise labels and numbers without connecting them to behaviour in the dough. They cannot explain why a high-W flour suits a long fermentation or why a liquid levain gives a different crumb from a stiff one, so answers to formulation questions become lists of names.
What to do instead
For each raw material, learn three things: its composition and functional role, the measurable indicator that matters (protein content, W value, ash content, fat content, water activity), and the practical consequence in the dough or the finished product. Practise explaining substitutions - what changes if you replace part of the strong flour with rye, or part of the fresh yeast with a levain - in terms of fermentation speed, gas retention, flavour and shelf life.
Answering health-and-safety-at-work questions only in terms of the finished product, forgetting the hazards of the bakery itself: burns from oven and steam, slips on flour and water, manual handling of 50 kg bags, flour dust as a respiratory risk, and the safe use of mixers and dividers.
Candidates conflate food safety with workplace safety and assume the hygiene answer covers both. The physical and respiratory hazards of a fournil are learned on the job and rarely written down, so they are not recalled in the exam.
What to do instead
Keep the two frameworks separate and label them clearly. For workplace safety, work through the risk by workstation: oven (burns, steam, hot trays), mixing (entanglement, dust), storage (manual handling, racking), floors (slip hazards, drainage), and the shared risks (noise, heat, night work). For each, give the prevention measure - guarding, extraction, protective equipment, training, signage - and the document that records it (document unique d'évaluation des risques).