You can make homemade butter with just heavy cream and a bit of salt. Start by pouring cold heavy cream into a jar or a mixing bowl. If you're using a jar, fill it halfway and shake it vigorously for about 5 to 10 minutes. First, it’ll turn into whipped cream, and then it’ll separate into yellow butter solids and liquid buttermilk. If you're using a mixer, whip the cream on high speed until it separates the same way. Once separated, pour off the buttermilk and save it for baking. Rinse the butter under cold water and knead it gently to remove any remaining buttermilk, which helps it last longer. You can mix in salt to taste, or even herbs or garlic if you want flavored butter. Store it in the fridge in an airtight container and it should keep for several weeks. It’s simple, satisfying, and way cheaper than buying butter regularly.