I wanted to do a hash brown crust--but I had a pie crust in the fridge for a long time, so I used it!No, I have never added lemon or other kind of acid to my tofu quiches. I don't think I've ever seen that in the recipes I've looked at.
I don't find mine to be bland at all, luckily! I do add Daiya cheddar and Mozzarella shreds. Plus nutritional yeast and sometimes, even vegan parm.
I often make mine crustless, as well...always trying to eliminate unwanted calories. But. This time I had the bright idea to use hash brown potatoes as the crust. I'm so excited...it's in the oven now. I hope it comes out ok...I'm bringing it to Easter brunch tomorrow at my cousin's house, along with a french toast bake and cinnamon rolls.
I find lemon juice brings out the best in tofu dishes- kinda 'brightens' the flavors. Like lentil soups- I'll add an acid, either vinegar or lemon, at serving.