A sweet, tangy, and mildly spicy rhubarb jam made slowly for deep flavor and a rich texture.
4 cups rhubarb
1 1/2 cups sugar
1/2 cup apple cider vinegar
1/4 cup water
2 cloves garlic
1 tablespoon ginger
1–2 teaspoons chili flakes
1/2 teaspoon salt
1 tablespoon lemon juice
Adjust spice level to taste. Cook longer for thicker consistency.