These must be pressure canned (for safety) and there’s not much variation in prepping (wash potatoes, cube, pack in jars, top with salt and hot water then process). Here are a couple tutorials to get you started:
How to Make Strawberry Jam: Hot Damn, This is Good Jam
Canning is a technique that can intimidate even the experienced cook. Here, we show you basic canning techniques, using a plum jam recipe. However, the same methods can be used for preserving many other fruits and some vegetables. After you’ve mastered the basics, you can move on to more elaborate recipes. Although preserving can be hot, sticky work, we’re sure you’ll find the rewards are glorious.