Don't boil the water. Boiling water scorches matcha and turns it bitter. Let boiled water sit about a minute before whisking. Sift the matcha — clumps are what bite back on your tongue. Taste the strawberry puree before building the glass; tart or flat berries may need a little more honey. Store the puree in a covered jar in the fridge for up to 3 days, or freeze it in an ice cube tray for up to 3 months. For a vegan version, use maple syrup instead of honey and your favorite plant milk — oat milk works best.