Chest freezers were often kept in garages and other cold places and worked efficiently (and economically) by not having to fight central heating temperatures. I have read your column for years, and been impressed with the clear explanations you normally provide.
Amino acids are found in animal sources such as meats, milk, fish, and eggs. They are also found in plant sources such as soy, beans, legumes, nut butters, and some grains (such as wheat germ and quinoa). You do not need to eat animal products to get all the protein you need in your diet.
Although many people associate meat with protein, you can meet your protein needs with plenty of plant-based sources. Unfortunately, new and seasoned vegetarians are often guilty of removing meat, poultry and fish from their diets without a reliable plan to replace those animal proteins with vegetarian proteins.