At matchaya, customers can opt to go for oat milk in replacement of the usual fresh milk in their drinks for an additional $1. The choice of oat milk is perfect for those needing dairy-free/gluten-free/vegan options!

Tried the koicha milk previously with fresh milk, and went for oat milk this time round instead out of curiosity. I ended up preferring the version made with oat milk though.
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Not sure why, but it just felt smoother and creamier and a little less astringent too. However, the additional topup made this drink cost a whopping $8.50. Talk about burning a hole in my wallet..