What does the cryptic crossword clue "Asian beer spilt in sauce (9)" mean?

The definition is "sauce". The wordplay uses an anagram. anagram of ASIAN + BEER = BEARNAISE; definition: "sauce" The answer is BEARNAISE.

Asian beer spilt in sauce (9)

Daily Mail Cryptic #17161 | 14 Across | 2023-08-11 flower