Cucumber and Dill Salad

Ingredients

• 7 lbs of English cucumber, trimmed and sliced into ¼-inch thick rounds (if the cucumbers are large cut the rounds in half)
• 3 lbs of medium red onion, peeled, trimmed and thinly sliced into half moons
• 2 ½ cups of finely chopped fresh dill
• 10 (1 cup + 2 Tbs.) of shallots, peeled, trimmed and finely chopped
• ¾ cup of dijon mustard
• 2½ cup of white wine vinegar
• 3 ⅓ cups of olive oil
• 2 ½ tsp of kosher salt, to taste
• 2 ½ tsp of freshly ground black pepper, to taste