Until recently, I tended to buy green stuff (vegetables, fruits) from the peasant’s market. After a bit of thinking, I decided:  It’s always OK to buy exotic stuff from the supermarket (I used to do this, already). Buying from peasants gives you a possibility – the fruits & veggies may come from people who don’t do fertilizers. Buying from the supermarket gives you a certainty – you certainly know the origin, and you should know that they generally did things which are legal to the products. I used to see all of the advantages of a peasant’s market, and none of the supermarket’s. Now I see no reason to avoid buying Romanian grapes from Carrefour. I can buy them from peasant’s market, but I can also buy them from Carrefour. It’s about the same.