1 31/2-inch strip lemon peel (yellow part only, removed with vegetable peeler)
12 oz cherry tomatoes
1/4 c. coarsely chopped fresh dill
2 garlic cloves, thinly sliced
1/4 tsp dried crushed red pepper
Put the vinegar and 3/4 c. water into a small saucepan, and add the salt, sugar, and lemon peel. Bring to a boil, stirring to dissolve the sugar and salt. Remove from heat and set aside to cool for 20 minutes.
Meanwhile, prepare everything else. Halve the tomatoes, and toss them with the dill, garlic, and crushed red pepper in a large bowl. Add the cooled vinegar mixture. Let stand at room temperature for at least 2 hours and up to 8 hours. Pack in a large jar and store in the fridge for a week or two.