01 - Preheat oven to 350°F. Spread almonds on a baking sheet and roast for 10-12 minutes until golden brown and fragrant. Allow to cool completely before proceeding.
02 - Combine cooled roasted almonds, water, honey or maple syrup, vanilla extract, and salt in a blender. Blend on high speed for 2-3 minutes until the mixture is smooth and milky.
03 - Pour the blended mixture through a fine mesh sieve or nut milk bag into a pitcher or jug. Press firmly to extract all liquid while removing almond solids.
04 - Stir in the heavy cream or coconut cream until fully incorporated and smooth.
05 - Refrigerate the almond milk mixture for at least 1 hour until thoroughly chilled.
06 - Fill glasses with ice cubes and pour the chilled almond milk over them. Garnish with roasted almond slivers or a sprinkle of cinnamon if desired.