Business Insider talked to three chefs about some of the biggest mistakes people make while shopping at the grocery store. <br />Shoppers should make a list or they can end up spending more money and forgetting items.<br />Going to the store on an empty stomach may lead to more impulse buys.<br />If a list isn't organized, you may be wasting your time.<br />If shoppers skip the sale or reduced-price section, you may be missing out on great deals.<br />Shoppers should try to avoid getting lured into deals for items you don't actually need.<br />By visiting the grocery store once every two weeks, shoppers may be missing out on deals and fresher produce.<br />Shoppers should non't be afraid to try the generic version of some foods.