Tomato Cucumber Parsley Salad

Ingredients

• 19 (about 13 pounds) of cucumbers—peel and slice 1-inch wide
• 10½ quarts (about 15 pounds) of grape tomatoes, halved
• 2 (about 2 /3 pound) of large red onions, sliced thin
• 1¾ cups of olive oil
• 5½ cups of flat-leaf parsley, chopped
• 1½ Tbsp of kosher salt
• 1½ tsp of black pepper