1 – 1 1/2 lb medium green tomatoes, washed and sliced
2/3 C apple cider vinegar
1 clove garlic, sliced lengthwise
1 C water
2 T sugar
1 t peppercorns
1 T kosher salt
pinch crushed red pepper flakes
1 t coriander seeds
1 t mustard seeds
1 small onion, peeled and quartered
Bring the vinegar and water to a boil, with garlic, sugar, peppercorns, salt, red pepper flakes, coriander and mustard seeds.
Dissolve sugar and salt, let cool for 15 min.
Layer onions and tomato slices in a pickling jar. Pour in the liquid.
Let stand for 2 hours, then put in a fridge overnight.
Match made in Heaven: