The complete three-tier breakdown of allowed, restricted, and prohibited foods for home food sellers operating under Massachusetts residential kitchen rules (105 CMR 590).
Every food restriction in Massachusetts's residential kitchen framework comes back to one concept: TCS — Time/Temperature Control for Safety. A TCS food is one that can support the growth of dangerous bacteria (like Salmonella, Listeria, or E. coli) when held in the "danger zone" between 41°F and 135°F. If a food needs refrigeration or specific temperature control to stay safe, it's a TCS food — and it's not eligible for home kitchen production under the retail residential kitchen permit.
The good news is that TCS ingredients can absolutely be used — eggs in a cake, cream in a ganache, butter in frosting — as long as the finished product exits the danger zone through baking or cooking and doesn't need refrigeration afterward. A fully baked chocolate cake with buttercream frosting is shelf-stable and allowed. The same cake with cream cheese frosting that requires refrigeration crosses into TCS territory and is not permitted.
The prohibition on acidified, fermented, and thermally-processed foods (pickles, hot sauces, salsas, canned vegetables) exists because these processes require precise pH control and food science verification to ensure safety — standards that state and federal regulatory frameworks govern tightly. The sole exception is jams and jellies made through water-bath canning, which Massachusetts explicitly permits. For everything else in this category, a licensed commercial facility or co-packer is your path forward.
Enter your specific product and get an instant answer about whether it's allowed under Massachusetts residential kitchen rules — plus what label requirements apply.
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