Vanilla Bean Paste (Best Option)
1/2 teaspoon per 1 teaspoon vanilla extractVanilla bean paste contains vanilla extract, vanilla bean seeds, and a thickening agent, which delivers a concentrated vanilla flavor and visual appeal similar to pure extract. It works well in quiche because it doesn't add extra moisture that could alter the custard's set.
For best results, mix the paste evenly into the custard base to distribute flavor and specks uniformly. Avoid adding additional liquid to maintain the quiche's structure.
Compared to vanilla extract, vanilla bean paste offers a more intense and aromatic vanilla presence with a slight textural enhancement from the seeds, elevating the overall sensory experience of the quiche.