As a fledgling trademaster, I've heard about commodities that can be used for some special materials. The one I know off of the top of my head is that iron can fill in for metals like bronze and the like. Is there a compiled list somewhere that lists all of these exceptions? I'm mainly interested in ones that can be used in cooking, but I figure knowing all the others couldn't hurt.
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Comments
gems - glass/any cut gem not existing as its own commodity
marble - ceramics/clay
iron - any metal that doesn't exist as its own commodity
feathered corpse - any use of feathers
any corpse - blood/bones
milk - dairy/cheese/cream etc
fruit - nuts
palette - any and all colours in place of individual tints
infernobeetle - obsidian
Also, cooking designs don't require you include things like tints, or materials for utensils/crockery etc. Just the comms for the food.