Preheat your oven to 350 degrees F. Line just the bottom of a 10 inch tube pan. (See Best Tips #1 Above).
Place your sesame flour, baking powder, whey protein powder, sweetener and salt into a food processor. Pulse several times to combine (and aerate). Set aside.
Whisk the egg whites and water in a large mixing bowl until the mixture just starts to foam. Add the cream of tartar and begin whipping with the mixer on medium speed for 1 minute which should give you soft peaks. Add the lemon extract and vanilla stevia and keep whipping on medium speed. Whip until medium peaks which should take between 3-5 minutes. Add enough of the dry mixture to just dust the top of the foam. Fold into whipped egg whites using a rubber spatula or silicone spatula and repeat until almost all of the dry mixture is incorporated.
Gently spoon the batter into the ungreased tube pan or angel food cake pan and bake for 35 minutes. Use a long skewer or chop stick inserted half way between the outer wall and the center. If if comes out clean and dry, it's done, if not bake another 5 minutes.
Flip the angel food cake upside down so its on its "feet" and allow to cool for 2-3 hours before serving. Use a serrated knife to slice this delicate low carb cake.
Enjoy with fresh berries and sugar free whipped cream.
Storage instructions: This beautiful keto nut free angel food cake will store covered with plastic wrap on the counter for up to 5 days. You can also store in the freezer by slicing each piece, layer parchment between slices then place into an airtight container or plastic bag. Take individual pieces out as you like. Thawing naturally in the fridge is best.
Notes
Net Carbs: 3 gThis recipe was first published in May 2021.