We are hooked on kefir around here. We started buying it when we ran out of plain Greek yogurt. Since Miss E loves smoothies, I bought plain kefir as a drinkable yogurt option. She loves it and I love all the health benefits! Go HERE to print a new $1 off Lifeway Kefir coupon... it usually goes on sale for around $2-$3, so fairly frugal after the coupon.