Who doesn't love a farmers' market? You get to shop al fresco, mingle with neighbours and show off your adorable reusable shopping bags. You feel healthier just being there, surrounded by crisp veggies and ripe, juicy fruit.

But farmers' market outings can also be slightly overwhelming. What, exactly, should you buy—and what should you avoid?

"Farmers' markets are great because they help sustain local farmers and also increase access to fresh fruits and vegetables," says Dr Anna Maria Siega-Riz. "But you need to be careful about making a blanket statement that all the food there is healthy for you." 

Case in point: Those delicious "straight from the orchard" apple pies, blueberry muffins ("made with local blueberries!"), and other pastries. You should also be picky when choosing processed foods, like jams and sausages, which might contain too much salt or sugar.

When it comes to produce, you probably stock up on plenty of familiar, seasonal favourites, like corn, cherries and green beans. There's nothing wrong with that—it's pretty hard to go wrong when buying fruits and vegetables in general—but sometimes it pays to break out of a rut. So taste those samples, see what you fancy and also keep an eye out for the following: 

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