There are two. The first concerns the so-called “neo-protein products” based on plant protein, mainly sourced from legumes, such as soy. But they aren’t a good substitute in terms of amino acid make-up and are somewhat costly. The other solution is alternative protein, such as that of insects. This refers to any protein that may be grown and produced outside of the agroindustrial complex. Insects contain a great deal of genuine protein, but it must be kept in mind that, in large doses, it acts like a powerful allergen. Then, for instance, locusts are approximately 50% protein, but require just as much water and plant feed as cows.