Add sugar to the Ninja Creami container. Add the hot water and stir to dissolve the sugar.
Juice enough lemons to get ¾ cup lemon juice (sometimes that's 3 lemons for me, sometimes its 5). Add the lemon juice to the Ninja Creami container and stir to combine.
Place in the freezer on a flat surface and freeze for at least 18-24 hours.
Run warm/hot water along the outside of the container for 1-2 minutes to thaw the outside layer of sorbet.
Process on the sorbet setting, then enjoy.
Notes
This is the perfect combination of lemon to sugar to help balance the tartness of the lemon without being too sweet. The number of lemons you use may depend on the size of your lemons and effectiveness of what tool you use to juice them.
Run warm/hot water along the outside edge of the Creami container before processing. This will help the outer edge thaw and get incorporated into the sorbet. Otherwise, it will stay frozen.
Mine was perfect after just processing once, but if yours is crumbly, use the respin feature to get to the texture you want.
If you have leftovers, smooth out the top and then return to the freezer. You will likely need to reprocess before enjoying again.