Yep. Fritters can be a great way to use up leftover curry or pasta sauce, especially if there's not quite enough to feed everyone for another meal. Just add the leftovers to the flour, eggs and water and fry.
Back in the 70s, when money was tight towards the end of the month, Mum used to make fritters. Some flour, an egg, water, and whatever she had to hand - a can of corn, a courgette, a bit of ham, anything really. A cheap and easy way to bulk out a meal.