Wash and Trim: Thoroughly wash cucumbers and peppers. Slice off the 'blossom end' of the cucumbers to prevent softening enzymes from ruining the texture.
Slice: Cut cucumbers into 1/4 inch coins and peppers into rings. Remove pepper seeds if you prefer less heat.
The Salt Soak (Crucial Step): Place vegetable slices in a colander over a bowl. Toss with 1 tablespoon of kosher salt and the ice cubes. Let sit for 30–45 minutes to draw out excess moisture.
Rinse: Rinse the vegetables thoroughly with cold water to remove the salt, then pat completely dry with paper towels.
Make the Brine: In a non-reactive saucepan, combine white vinegar, apple cider vinegar, sugar, salt (1.5 tbsp), mustard seeds, celery seeds, and turmeric.
Simmer: Bring to a boil over medium-high heat, stirring until sugar dissolves. Reduce heat and simmer for 2 minutes to bloom spices.
Pack Jars: Divide fresh dill and garlic between two clean pint jars. Pack the cucumber and pepper slices tightly into the jars.
Pour Brine: Pour the hot brine over the vegetables, leaving 1/2 inch of headspace. Tap jars gently to release air bubbles.
Cool and Store: Let jars cool to room temperature, then seal and refrigerate. For best flavor, wait at least 24 hours before eating. Keeps for up to 2 months.