Chowchow
Ingredients
Method
Toss cabbage, green tomatoes, onion, bell peppers, and salt in a large bowl until all of the vegetables are coated in salt (this will help them release some water). Cover and chill at least 8 hours and up to 12 hours. Drain vegetables.
Toast mustard seeds in a large pot over medium-high heat, shaking pan, until fragrant and slightly darkened in color, about 2 minutes. Add both vinegars, sugar, mustard, and turmeric. Bring to a boil, then reduce heat to medium-low and simmer 10 minutes.
Add garlic and drained vegetables to pickling liquid and mix well. Increase heat to medium-high and bring to a boil; cook 5 minutes. Reduce heat to medium-low and simmer until flavors have melded and liquid is slightly reduced, about 15 minutes. The cabbage and green tomatoes should still have a bit of a crunch. Let cool (this will take about 1 hour).
Using a slotted spoon, divide chowchow among sterilized glass jars of choice and spoon pickling liquid over (chowchow should be submerged and there should be about ½" space at the top of each jar. Cover and chill.
Do ahead: Chowchow can be made 1 month ahead. Keep chilled. If you’d like to keep it longer, you can use the water bath boiling technique to make the jarred chowchow shelf stable.