You do not have to grow your own. IGA “Real Value” supermarket is air-conditioned, white tiles, hanging signs over every row, the whole bit. It also has the advantage of being on the bus route and since everything in med school boils down to convenience, most people shop at IGA. Other options include Food Fair in Monte Tout and CK’s Super Value at the roundabout by the Texaco (yes, this is how directions are given in Grenada).
The tricks: Food Fair and CK’s are cheaper and you can buy in BULK. IGA has a much larger selection but you pay for the convenience and the AC with higher prices. IGA also has fresh produce, a deli, and the best shopping is Saturday mornings because the supply trucks unload on Friday night. It is an island, so things can be scarce. Milk and cheese will sometimes be unavailable. Veggie burgers are plentiful.