Dehydrated versus fresh protein

Dehydrated and fresh protein describe two states in which an animal protein can enter a recipe, and the difference between them is the source of one of the most persistent label illusions. Dehydrated proteins, such as a named [meat meal](/glossary/meat-meal), have had their water removed and are therefore concentrated, delivering a high proportion of dry-matter protein per gram, whereas fresh proteins still contain most of their original water (FEDIAF, 2024). Because the [ingredient order](/glossary/ingredient-order) ranks by pre-cooking weight, that water inflates a fresh ingredient's position on the list, lifting it toward the top without its dry-matter contribution justifying the prominence. The practical upshot is counterintuitive: a fresh chicken listed first can, once cooking drives off its moisture, contribute less actual protein than a chicken meal listed third or fourth. A surprising rule of thumb often cited in veterinary nutrition is that fresh meat loses roughly two-thirds to three-quarters of its weight as water during processing, which is exactly why its label position overstates its real input. None of this makes fresh ingredients bad; many quality recipes combine fresh and dehydrated sources deliberately. The lesson for a premium buyer is simply not to read top-of-list fresh meat as automatic proof of a high-protein diet, and to confirm with the [crude protein](/glossary/crude-protein) value on a [dry matter basis](/glossary/as-fed-vs-dry-matter). For more, see the [Petipedia glossary](/glossary).

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