Add more of the other ingredients to the amount extra of lemon juice or add more sugar.
No, because lemonade is watered out and contains sugar. That will make it too sweet. Substitute it with half as much white vinegar.
For a bread/cake already baked, dip it in vinegar.
Lemon zest is the very outside layer of the skin of a lemon - the yellow part - if you cut into the white part you have gone too deep and that part is called the pith. Lemon pepper is a completely different thing and is nothing to do with lemons and will give you a completely different flavour. 2 tablespoons of lemon pepper.
yes
Adding too much liquid, be it wine, water.
No, lemon does not contain fat, but it's bad for you if you eat too much of it(sour).
only in too much evaporayes on condensation for too much leaves
no
Your best bet is to add in some honey. It will improve the taste and texture of the salad while dulling down the powerful effects of the lemon. Cranberry jam would also work very well. If that won't work, then you should try adding in more of the other ingredients to balance out the amount.
too much milk in filling? Temp to high on the oven, or cooked too long
Either the sugar has not dissolved properly during the heating process. ( More likely to happen if you used granulated sugar). It may have overcooked and curdled. Alternatively, you may have got the proportions of ingredients wrong - too much sugar, not enough lemon juice or butter. Might be best of try a different recipe for lemon curd next time.
too much water?