You can make this sauce up to 13 days ahead of time if stored properly. Lemon Juice fresh-squeezed from a lemon is best, but you can substitute concentrated lemon juice or sour orange juice, if need be. Creole Cajun Seasoning, like Zatarain's or Tony Chachere's, can be used instead of the individual spices. This is a vegetarian-friendly and dairy-free recipe. To make it vegan, use a plant-based mayo. Store refrigerated in an airtight container--keeps for up to two weeks. Freezing is not recommended due to separation. Always check for freshness before use.