When macha is sticking to everything in the cup, it's a good indication that it's going to be bitter.
Stodgy macha will always be bitter.
When macha is sticking to everything in the cup 抹茶がコップの中の周りにべたつくと, it's a good indication that it's going to be bitter. その抹茶は苦い味でしょう
Stodgy macha べたつく抹茶will always be bitter. いつも苦い味です