Ikea meatballs? Better! Looks like a lot of work, but it isn’t really. Do not worry much about all the ingredients (marmite anyone?), use what you have (eg. milk instead of buttermilk), this is also what Kenji is preaching. If you will watch the video you will notice he is not really going by his own recipe. Practice what you preach!
I like the trick of adding gelatine to the mince, it definitely adds something.
Other great meatballs recipes on lindy.