Pepper PSA’s Peter Piper Picked Peter Piper picked a peck of peppers, because Peter Piper knew peppers are great sources of vitamin C. This powerful punch of vitamin C provides an antioxidant that may be effective in preventing certain cancers. Almost any dish, from homemade soups, stews and chili, to stir fries, salads, and salsas, can benefit from the addition of peppers. For practical tips on using peppers, contact your University of Wyoming county extension Nutrition and Food Safety Educator, Living Well in Wyoming.