What does the cryptic crossword clue "Sums up the scrambled egg as great (10)" mean?

The definition is "Sums up". The wordplay uses an anagram. anagram of EGG + AS + GREAT = AGGREGATES; definition: "Sums up" The answer is AGGREGATES.

Sums up the scrambled egg as great (10)

Guardian Cryptic #24052 | 20 Across | 2007-04-16 flower