I started doing this a few years ago. when your berries are going bad (or I guess you can use ripe but I mostly use the almost too old soft ones) put em in a pan and smash em up to get the juices out. I add a little maple syrup, cinnamon, tiniest bit of lemon juice, and some chia seeds to thicken her up. I think better than store bought and I smother my toast in it