Meal Prep Mason Jar Salad

1. At the bottom of a mason jar or in a bowl, add 1/2 a small chopped red onion.
2. Add about 2 tablespoons each of white vinegar and olive oil, along with cracked black pepper and salt. This mixture forms the dressing; the longer it sits, the better it gets, making it ideal for meal prep.
3. Layer the salad ingredients on top of the dressing. Suggested ingredients include iceberg or romaine lettuce, peppers, cucumbers, tomatoes, and shredded carrots.
4. To enhance the salad, accessorize with feta and chopped walnuts.
5. For a more substantial lunch, add flaked salmon or tuna and serve with bean-based chips.