At least 2/3 of the total amount of the annual retail sale of agricultural, horticultural, floricultural, vegetable and fruit products, soil, livestock and meats, poultry, eggs, dairy products, nuts, honey, wool and hides and other agricultural products shall be grown, raised or produced on the property on which the market is located. Notwithstanding the aforementioned restrictions, the farm market may sell supporting agricultural products and products not grown by the owner-applicant, provided that said products do not exceed 1/3 of the total annual retail sales of the farm market. Processed food, where the majority of the ingredients are grown on the farm, shall not be considered supporting farm products subject to the one-third-annual-sales limitation. Receipts and records of such purchases must be kept by the owner-applicant. Supporting farm products include but shall not necessarily be limited to baked goods, eggs, dairy products, preserves, syrups, herbal vinegars and salad dressings. Supporting farm products shall not include prepackaged grocery items or tropical fruits. The purpose of this provision is ensure that farm markets are limited primarily to the sale of locally grown products. A conventional grocery store or supermarket shall not be deemed a "farm market."