--- title: "Chocolate Shop Storage Temp & Humidity Log" canonical: "https://peakscaleops.com/checklists/chocolate-storage-temperature-humidity-checklist/" --- > Source: https://peakscaleops.com/checklists/chocolate-storage-temperature-humidity-checklist/ [Checklists](/checklists/) / [Chocolatier & Chocolate Shop](/checklists/chocolate/) / Ambient Storage - Temperature & Humidity # Chocolatier & Chocolate Shop Storage - Ambient Temperature & Humidity Checklist Eight Chocolatier & Chocolate Shop checks plus a three-times-daily temperature *and* humidity log, built around the finding that matters most in this segment: it is the cycling, not the heat alone, that blooms chocolate. This checklist logs every area separately - stockroom, counter, window display, gift stand are four different climates - sets **20°C (68°F)** as the action threshold and **75% RH** as a proven failure condition, and rules out the fridge, because the in-and-out cycle is the damage. It also says plainly what most guides will not: the famous 15–18°C, below-50% RH specification has no standards-body source we could find, so we publish it as a trade rule of thumb and log against it rather than citing it as fact. [Run this checklist - free](/run/chocolate/?list=ambient) [Download PDF](/checklists/pdf/peakscale-chocolate-checklists.pdf)[Download Excel](/checklists/excel/peakscale-chocolate-checklists.xlsx) The checklist · 8 checks ### Measure the room, not the weather **1\. Log the room temperature and humidity three times a day in every storage room, back-of-house area and display area.** Humidity causes half of what makes chocolate bloom, and almost nobody measures it. That is exactly why it keeps costing you stock. **2\. Use a min/max thermometer-humidity gauge or data logger in each area. Do not use the wall dial or a weather app.** A single reading misses the swing between checks, and that swing is what causes the damage. **3\. Log each area on its own. The stockroom, counter, window display and gift stand are four different climates.** An average for the whole shop hides the one sunny shelf that is quietly turning your bestseller grey. ### Stop the temperature swings **4\. Never put finished display chocolate in the fridge. If you must use cold storage, keep it sealed and let it warm back up to room temperature in its wrapper.** Published guidance is clear that the fridge is not the ideal place for chocolate. Going in and out of the cold is what blooms the surface. **5\. Above 20°C (68°F): move the stock or shade it, write down the time, and tell the manager.** In an 18-week trial, visible fat bloom began at 20°C. This is a level that calls for action, not just a comfort choice. **6\. Above 65% humidity: dry the air out or move the stock. Treat 75% humidity as a proven failure, not just a warning.** At 75% humidity with daily temperature swings, milk chocolate reached a Whiteness Index change of 7.9, and a mixed-fat dark sample reached a color change (ΔE) of 23.63, within 55 days. ### Protect the stock you already own **7\. Do a weekly bloom check. Inspect the oldest case in every area for haze, dull shine and softening, and write down what you find.** Bloom builds up over time. The oldest case is your early warning for everything stored behind it. **8\. Record every out-of-range excursion. Note how long it lasted, the reading, and which stock was exposed to it.** One hot afternoon rarely shows in your stock. Ten of them do. The excursion log is what proves which area is costing you product. ## Frequently asked questions **What temperature and humidity should chocolate be stored at?** Honestly: nobody publishes an authoritative number. PeakScale Ops defaults to 15–18°C (59–64°F) and 50% RH as a working band, but we could locate no standards body or trade association source for it - the only published specification we found was 18–20°C (64–68°F) at 60% RH, from an open textbook. What is measured is this: an 18-week trial retained highest quality at 6°C and 12°C (43°F and 54°F), saw visible fat-bloom differences begin at 20°C (68°F), and found 30°C (86°F) extremely unsuitable for every product tested. Set your own band, write it down, and log against it three times a day. **Should chocolate be kept in the fridge?** No - not for display stock. Published storage guidance states directly that the refrigerator is not the ideal place to store chocolate, and here is why: a 55-day study cycling chocolate between 20°C and 29°C (68°F and 84°F) produced intense fat bloom, with visible colour change appearing within 10–20 days on most mixed-fat recipes at 75% relative humidity. Moving product in and out of cold storage is a cycle you are creating on purpose. If cold storage is genuinely unavoidable, keep the product sealed and bring it back to room temperature still in its wrapper. **What causes chocolate to turn white or grey?** Two different defects with two different causes. Fat bloom is a greasy grey film that follows heat and temperature cycling, and at crystal level it is the transition of cocoa butter from Form V - which melts at 33.8°C (92.8°F) and gives chocolate its snap and gloss - to Form VI at 36.3°C (97.3°F). Sugar bloom is a gritty crystalline surface that follows damp. Log which one you found, because the fix is different: fat bloom means fix the temperature cycle, sugar bloom means fix the humidity. ## More Chocolatier & Chocolate Shop checklists [Goods-In & Receiving](/checklists/chocolate-shop-receiving-checklist/)[Opening - Set Up to Sell](/checklists/chocolate-shop-opening-checklist/)[Tempering, Bloom & Shelf Life](/checklists/chocolate-tempering-and-bloom-checklist/)[Allergens, Claims & Weighing](/checklists/chocolate-allergen-and-weighing-checklist/)[Closing - Capture, Reorder & Protect](/checklists/chocolate-shop-closing-checklist/)[Weekly Checks](/checklists/chocolate-shop-weekly-checklist/) One free app has all of them: [open the Chocolatier & Chocolate Shop Checklists app](/run/chocolate/) - offline, no account, add it to your home screen. ## Sources Every statistic on this page comes from public inspection and food-safety data: - [US FDA, Survey of Milk in Dark Chocolate Products](https://www.fda.gov/food/food-allergies/survey-milk-dark-chocolate-products) - [CFIA, Food Safety Targeted Survey - Undeclared Allergens and Gluten in Candies and Chocolate Products](https://inspection.canada.ca/sites/default/files/legacy/DAM/DAM-food-aliments/STAGING/text-texte/undclrd_allrgn_gluten_candies_choc_prod_1711566640336_eng.pdf) - [Effect of different storage conditions on fat bloom formation in different types of chocolate - journal of record: Hrana u zdravlju i bolesti / Food in Health and Disease, 2019; full text consulted via an author upload rather than the publisher](https://www.academia.edu/126780185/Effect_of_different_storage_conditions_on_fat_bloom_formation_in_different_types_of_chocolate) - [The effect of storage temperature on the quality and formation of blooming defects in chocolate confectionery, Potravinarstvo Slovak Journal of Food Sciences](https://potravinarstvo.com/journal1/index.php/potravinarstvo/article/view/425) - [Ghazani S.M. & Marangoni A.G., Molecular Origins of Polymorphism in Cocoa Butter, Annual Review of Food Science and Technology, 2021](https://www.annualreviews.org/doi/pdf/10.1146/annurev-food-070620-022551) - [National Confectioners Association, Confectionery Sales Climb to $55 Billion in 2025](https://candyusa.com/news/confectionery-sales-climb-to-55-billion-in-2025/) - [National Retail Federation, NRF Consumer Survey Finds Halloween Spending to Reach Record $13.1 Billion](https://nrf.com/media-center/press-releases/nrf-consumer-survey-finds-halloween-spending-to-reach-record-13-1-billion) - [CFIA, Targeted Survey - Undeclared Allergens and Gluten in Valentine's Day Candy and Chocolate Products](https://inspection.canada.ca/DAM/DAM-food-aliments/STAGING/text-texte/undeclared_allergen_gluten_vday_choc_1607110368635_eng.pdf) - [US FDA, Reportable Food Registry Fifth Annual Report](https://www.fda.gov/media/97862/download) - [European Commission DG SANTE, Alert & Cooperation Network Annual Report 2025](https://food.ec.europa.eu/document/download/5266bb47-4b7e-4558-9910-4c66519cbe7f_en?filename=acn_annual-report_2025.pdf) - [Business Companion](https://www.businesscompanion.info/en/quick-guides/weights-and-measures/packaged-goods-average-quantity) - [Competition Bureau Canada, Accuracy Requirements for Net Quantity Declarations](https://competition-bureau.canada.ca/en/accuracy-requirements-net-quantity-declarations) - [Australian Government Department of Industry, Consumers are getting what they pay for](https://web.archive.org/web/20240225174537/https://www.industry.gov.au/news/consumers-are-getting-what-they-pay) - [US FDA, Draft Guidance for Industry: Hazard Analysis and Risk-Based Preventive Controls for Human Food](https://www.fda.gov/media/99572/download) - [ECDC, Monophasic Salmonella Typhimurium outbreak linked to chocolate products](https://www.ecdc.europa.eu/en/news-events/19-april-update-monophasic-salmonella-typhimurium-outbreak-linked-chocolate-products) - [National Retail Federation, National Retail Security Survey 2023](https://nrf.com/research/national-retail-security-survey-2023) - [CoBank Knowledge Exchange, Volatile cocoa, sugar prices smack confectionery industry](https://www.cobank.com/knowledge-exchange/volatile-cocoa-sugar-prices-smack-confectionery-industry)