Use 175°F water — boiling water scorches matcha and makes it bitter. If the pour goes wrong and the matcha mixes into the milk, it still tastes the same; the layers are optional. For a dairy-free version, barista-grade oat milk holds the layer best. The vanilla syrup keeps for two weeks in the fridge in an airtight jar.
Keyword cafe drink at home, iced matcha latte, matcha with vanilla syrup, vanilla matcha iced tea