The difference between barley tea mainly includes two aspects: wheat type and production method.

1. Wheat seeds: The wheat seeds of barley tea mainly include yellow barley, black barley and green barley. Yellow barley has larger grains, golden color, and rich taste; black barley has smaller grains, is dark brown, and has a rich aroma; green barley has smaller grains, is light green, and has a refreshing taste.

2. Production method: The production methods of barley tea mainly include baking and steaming. Roasted barley tea has a mellow taste and rich aroma, but the nutritional content of the barley tea is reduced due to excessive heat. Steamed barley tea retains more nutrients and has a refreshing taste, but the aroma and taste are slightly lacking.

In summary, the difference between barley tea mainly depends on the wheat species and production methods. Different choices can bring different tastes and nutritional ingredients. Since everyone’s tastes and preferences are different, it’s important to choose a barley tea that suits your taste and preferences.