いかが (ikaga) means “how about ___” | MotiTan Japanese Dictionary

More examples

こちらの料理の味はいかがですか。ko chi ra no ryō ri no aji wa i ka ga de su ka

How does this dish taste?

Presents a polite way to ask how something is or to offer it as a possible choice.

どうdō: Asks how something is or suggests an option in a casual or neutral way.

相手に物事の具合を尋ねたり、選択肢を示して意向を尋ねたりする語。ai te ni mono goto no gu ai o tazu ne ta ri sen taku shi o shime shi te i kō o tazu ne ta ri su ru go

いかが (ikaga) is an old Japanese form that developed from いかにか (ikani ka), meaning "how?"

English speakers may recognize いかがですか (ikaga desu ka) as a polite question, but in everyday offers it commonly means "How about...?" rather than asking only about a condition.