Japanese phrase
どっちですか？ do tchi de su ka
Meaning
Which one is it?
When to use it
Asks which of two choices is meant. This polite but casual question is common when choosing between familiar options.
Example dialogue
赤と青、どっちですか？ aka to ao do tchi de su ka
Which one is it, the red one or the blue one?
赤です。 aka de su
The red one.