1/2 cup mayonnaise
1/2 cup sour cream
2 tablespoons onion salt (preferably from Trader Joe's)*
juice of 1/2 lemon
Mix or raw vegetables for dipping.
Mix everything together in a bowl and taste for seasoning. Add more lemon juice or onion salt as needed.
*Trader Joe's onion salt contains a mix of granulated onion, granulated garlic, dried chives, green onion and kosher salt. If you don't have a Trader Joe's near you, you can make your own mix to use in the dip.