Lavender extract is made with alcohol, which is not AIP. I have yet to find a brand that is alcohol-free like there is for vanilla extract. You can simply use dried crushed food-grade lavender. The amount will vary so start small (1/4 tsp) taste and see if you want to add more. If you cannot access culinary lavender you can also use vanilla extract. I would start with 1/2 tsp and taste, possibly add 1 tsp.