The best non-dairy milk for a pumpkin spice latte varies based on personal preference. Almond milk has a nutty flavor and froths well, while soy milk is known for its neutrality and great frothing abilities. Oat milk, with its natural sweetness and creaminess, is a popular choice. Coconut milk adds richness and a hint of coconut flavor, cashew milk provides a luxurious texture without overpowering the spices, and rice milk offers a lighter, mildly sweet option. The choice ultimately depends on your taste.