Make sure your mixing bowl and beaters are clean - wipe with lemon juice or vinegar.
In a mixing bowl put in egg whites, egg white powder, and gelatin.
Mix until stiff peaks form with either a stand or hand mixer.
Onces the egg whites are at or near stiff peaks, add the lemon extract and lemon juice and continue mixing until well incorporated
Spoon mixture into a loaf pan. If using regular loaf pan, line with parchment paper first.
Bake for 30 minutes.
After 30 minutes, turn the oven off but leave the loaf in the oven - for at least 30 minutes.
When cooled, remove from pan and either slice immediately or store in zip lock bag in refrigerator for a day then slice
Enjoy!
Notes
Make sure you bowl and beaters are free of any fat. Wipe with lemon juice.Do not add the extract and lemon juice in the beginning or the egg whites will not whip to stiff peak.