The latest business Amazon may expand into is the business of meal-kits. According to TechCrunch, Amazon recently filed a trademark (serial number 87517760) for "We do the prep. You be the chef," which relates to a meal-kit service similar to the kind offered by Blue Apron and others. From the report: Amazon describes the service simply: "Prepared food kits composed of meat, poultry, fish, seafood, fruit and/or and vegetables and also including sauces or seasonings, ready for cooking and assembly as a meal; Frozen, prepared, and packaged meals consisting of meat, poultry, fish, seafood, fruit and/or vegetables; fruit salads and vegetable salads; soups and preparations for making soups." It turns out that, in fact, company in the last seven months had registered at least two other trademarks for slightly shorter versions of the same meal kit concept. Respectively, serial numbers 87418923 and 87256976 for "We prep. You cook" and "No-line meal kits," also relate to food-kit services along with marketing related to them. Amazon also has been quietly developing its own lines of pre-made food aimed at people searching for more quality ingredients. The company has, for example, around 10 trademarks filed related to the phrase "single cow burger."