Garlic sauce (5)
I believe the answer is:
aioli
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">garlic sauce</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for aioli that I've seen before include "A lamb joint; driven clouds" , "Mayonnaise with garlic" , "Garlic mayo" , "11 [SAUCE]" , "Dressing" .)