I’m horrible about using recipes, but I can tell you what I do. I start with tomato paste, then add apple cider vinegar (start with a splash), ground cloves, nutmeg (be sparing with these last two ingredients), and salt. If you need to thin it out more, add some water. I slowly add light brown sugar, starting with a teaspoon, to taste. I usually have homemade garlic powder and onion powder on hand and I toss that in, too. I sometimes add mace.
Some recipes have you start with tomato sauce and reduce it, but I like going the other way and starting with paste and thinning it out. Much faster.