Get yourself this stuff: Pure Matcha, Premium Rooibos Powder: Amazon.com: Grocery & Gourmet Food
My greatest achievement so far was a rooibos-chai-vanilla bean ice cream with liberal amounts of the red matcha. That, and a mayan mocha ice cream - pumpkin pie spice, cayenne, fresh black pepper, cocoa vanilla, and instant coffee.
I don't use recipes. Just start with a traditional custard base, sub honey for sugar if you want, and add any other flavorings to taste.
“The whole concept of a macronutrient, like that of a calorie, is determining our language game in such a way that the conversation is not making sense." - Dr. Kurt Harris