In a large bowl, combine the thinly sliced cucumbers, sliced red onion, and sliced green bell pepper. Sprinkle with salt and set this mixture aside.
In a saucepan, combine the white vinegar, sugar, celery flakes, and red pepper flakes. Bring the mixture to a boil over medium heat.
Once boiling, remove the saucepan from the heat and add two handfuls of ice. Stir until the ice has completely melted.
Arrange the salted cucumber, onion, and bell pepper mixture in large-mouth canning jars. This should fill either two quart-sized jars or one half-gallon jar.
Pour the vinegar mixture over the vegetables, ensuring they are completely covered.
Store your jars in the refrigerator. This salad will stay fresh and delicious for up to two months. Enjoy!
