spent grounds; used tea leaves; used coffee grounds
Refers to tea leaves, coffee grounds, or kelp/bonito flakes after brewing, when the flavor has been extracted.
Please throw away the used tea leaves from the teapot.
コーヒーの出し殻は肥料として使える。
Used coffee grounds can be used as fertilizer.
Standard kanji spelling.
Kana spelling is common in everyday writing.
Compound of 出し (dashi, 'broth, extraction') and 殻 (kara, 'husk, shell'), with rendaku voicing to gara. Literally 'extraction husk'.