Warm the milk gently: In a small pot, heat 1 cup almond milk over low to medium-low heat until steaming, not boiling.
Aim for about 150–160°F (hot but not scalding).
Blend the base: In a blender, add 1/3 cup pasteurized liquid egg whites, 1 tablespoon almond butter, 1 teaspoon vanilla extract, 1–2 teaspoons maple syrup (optional), a pinch of salt, and 2–3 tablespoons hot coffee or 1 teaspoon instant espresso (optional).
Temper and blend: With the blender running on low, slowly pour in the hot almond milk. Blend for 20–30 seconds until frothy and smooth.
Heat to finish: Pour the blended mixture back into the pot and warm over low heat, stirring constantly for 1–2 minutes. Do not boil.
This step sets the proteins slightly and gives a creamy, latte-like body.
Serve: Pour into a mug. Top with a dash of cinnamon or nutmeg if you like. Taste and adjust sweetness.