Peel, seed, and slice cucumbers. Stir together mayonnaise, vinegar, evaporated milk, sugar, dried parsley flakes, hot sauce, salt, garlic powder, and pepper. Toss in cucumbers and green onions. Chill 8 to 24 hours.
This is the best cucumber recipe I have tried for years. It is a perfect side dish to anything barbecued, but we have been having it nightly because it is so delicious. My husband loves cucumbers. I did not have white vinegar so I've been using white wine vinegar. I also use Splenda instead of the sugar and can't tell the difference. It is easy to put this recipe together ahead of time and then let it marinate at least 8 hours or up to 24 hours. I'm sure it is excellent the next day, but we never have left-overs.