Every year, the Environmental Working Group issues its “Clean 15,” which are fruits and vegetables least likely to hold significant pesticide residue.The 2015 list includes avocados, sweet corn, pineapples, cabbage, frozen sweet peas, onions, asparagus, mangoes, papayas, kiwis, eggplant, grapefruit, cantaloupe, cauliflower, and sweet potatoes. Bam – the EWG probably just saved you $10-$15 off your produce bill. Conversely, their “Dirty Dozen” list was also just released, which highlights the 12 fruits and veggies you should spring for the organic versions of, owing to worrisome levels of pesticides: Apples, peaches, nectarines, strawberries, grapes, celery spinach, sweet bell peppers, cucumber, cherry tomatoes, imported snap peas and potatoes. So … yeah. There goes about 75 percent of your savings.