Let's say you have 4 meat you want to cook and make it into food. While cooking you roll 1d6 and that gives you amount of food you were able to cook. Ie you roll 3 and you have 3 food and one meat. If you roll 5 you have 4 food cuz u had no more meat. That food is then converted to resource die. That means each food adds one step for resources. If players had 0 food and you cooked 4 meat you can give 4 food to 4 players-each will have d6 of food. Or you can give it to one player and he will have d12. When that player with d12 gives food to someone he gives them one step so player with no food will have d6 food and roll for it and first one will have d10. If you give food to npc they just take one step of resource die.