Protein & Nutrition Blog – Marmels

Bar chart of storage temperatures in degrees Fahrenheit, from the freezer and refrigerator to a sealed pantry at 66 and a car glove box at 105, with an ideal 54 to 68 band

Protein & Nutrition Blog – Marmels

How to Store Dark Chocolate in Summer

by Mo Mandegar, PhD on Jun 19 2026
Dark chocolate is happiest between 65 and 68 degrees Fahrenheit, sealed, and away from the refrigerator. Summer breaks all three conditions at once, which is why bars develop the white film called bloom. Here is what the food science says about storing chocolate through the hot months, the difference between fat bloom and sugar bloom, and the simple setup that keeps a premium bar tasting like itself from delivery to the last square.