Anagram of what? Seems to me that you'd have to clue the removal of certain letters to end up with those that spell "soups". I see where you're going with dinner as an anagram indicator but think something else would work better. Let's see what Sue and others think.
I think dinner may be just about okay as an anagram indicator, but not the "part of sumptuous" element of the clue (too vague); however, I defer to the pasta masta.