Thinly slice the cucumbers into a larger bowl with a mandoline slicer
add 1 tsp salt and 1 tsp white balsamic vinegar, stir
cover and let sit for 30 minutes
drain in a colander for 30 more minutes
put cucumbers back into large bowl & add 1/4 cup mayo & 1/4 sour cream
Finely chop fresh dill and add to bowl, stir
Can serve immediately, but it's best after being refrigerated for at least an hour. Will keep in the fridge for 3-5 days.