Roasted Wheat Tea

1.
Roasted Wheat Tea is one kind of roasted grain beverage - that is a hot beverage made from one or more cereal grains roasted and commercially processed into crystal or powder form to be reconstituted later in hot water. The product is often marketed as a caffeine-free alternative to coffee and tea.
2.
Roasted wheat is used in Postum, a coffee substitute. Postum was a powdered roasted grain beverage sold by the Kraft Foods company as a coffee substitute, and it is caffeine-free beverage mix.
1+2 --> 是咖啡代替品.