This publication is a guide to selling raw, processed, and prepared food products from your home, at farmers’ markets, stores, and roadside stands. This guide will detail the answers to those questions, which vary depending on the type of food product and preparation process used. All food producers should follow the relevant good manufacturing practices (for example, those outlined in 21 CFR 114 and/or 21 CFR 117). This guide includes information related to meat, poultry, dairy, seafood, crustacean, shellfish, produce, maple syrup, honey, eggs, baked goods, jams, preserves, jellies, fruit butters, acidified canned foods, dehydrated foods, packaged refrigerated or frozen foods, kombucha, juice, pet treats, samples, time and temperature controlled for safety foods, and food service vendors.

This is a fact sheet explaining water activity, how water activity is related to food safety/spoilage/shelf-life, defining water activity-controlled foods, determining if a product is classified as water activity-controlled, working with the Food Producer Technical Assistance Network to conduct and interpret water activity testing, and recommendations for the frequency of water activity testing.