Walmart Inc. says it will launch meal kits at more than 2,000 of its stores. This is coming at a time when both the in-store meal-kit business and the meal-kit category are expanding at a double-digit rate.

Nielsen data shows that in-store meal kit sales grew 26.5 percent in the past year to $154.6 million. Overall, 9 percent of consumers, about 10.5 million households, have purchased a meal kit either online or in-store over the past six months. A quarter told Nielsen they would consider purchasing one in the next six months, the equivalent of 30.1 million households.