Quick recap of the Egg test: Take a clean and fresh (uncooked) egg, drop it in your sorbet base and check much of the egg is showing up above the surface once it has resurfaced. If the egg remains submerged, or if less than about a scant 2½ cm (about the size of a US quarter) is showing above the surface, add more sugar. Likewise, if more than 2½ cm is showing up, add more juice, fruit puree or water to the mixture.
When the “ideal” 2½ cm elevation is achieved, your base has reached the ideal sugary sweet spot for sorbets!