Your goal is to make as much money as possible buying and trading spices. But, watch out for economic volatility! Also, it will help to have the USDA on your side... make sure you have filled out your PPQ 546 and 587 permits and also obtain an APHIS permit too.
Notes for future versions: Chance for a spice to be unavailable: 1/8 (works) Chance for a FDA investigation: 1/7 Chance for non-economic event: 1/14 Chance for each economic event: ~1/20 individually determined