Soak raw cashews in hot water for 15-20 minutes before blending to achieve the smoothest, creamiest texture without any grittiness in your final product.

Use a high-powered blender and process for 2-3 minutes, stopping to scrape down sides as needed, until you achieve a completely smooth consistency without any cashew particles.

Taste and adjust the lemon juice and apple cider vinegar ratio gradually—start with less and add more to find your preferred tanginess, as different palates require different acid levels.

Refrigerate your vegan sour cream for at least 2 hours before serving; it will continue to thicken as it cools, achieving the perfect dollop-able consistency.

Choose a high-quality Dijon mustard with visible seeds for superior flavor depth and natural emulsification that helps create a more authentic sour cream texture.