One of the products that I noticed the price of in the grocery store venture last weekend is Kefir. A pint of it was just under $13.00. After making my first kefir culture, I noticed the price on it was $5.00. That was in 2018/19. I buy two litres of milk a week, that went up in price to $6.00. It makes three to five batches of Kefir, depending on the amount I make. I have a culture going out on Monday, to a student, that will reduce the amount I am making and increase the length of time between buying milk. This jug has over two of the pints on sale at the grocery store. which is over $26.00! The link to the audio of the post I mentioned at the beginning of this description is https://youtu.be/VIct48B0yyY?si=RKXuJo0cVLYdQXTn