Add "Quarkbällchen" recipe (#580)

* Add "Quarkbällchen" recipe

* Update src/quarkbaellchen.md

Co-authored-by: Steven Hall <Hallzy.18@gmail.com>

* Update src/quarkbaellchen.md

Co-authored-by: Steven Hall <Hallzy.18@gmail.com>

Co-authored-by: Kirill Schmidt <kirill.schmidt@teckids.org>
Co-authored-by: Steven Hall <Hallzy.18@gmail.com>

src/quarkbaellchen.md

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+# Quarkbällchen – Fried curd balls
+
+![An image of my finished curd balls](pix/quarkbaellchen.webp)
+
+“Quark” is a type of fresh dairy product. It's usually translated as curd cheese or cottage cheese.
+
+## Ingredients
+
+- 420ml quark (plain yoghurt can be used as a replacement)
+- 2 eggs
+- 6 or 7 tbsp of sugar
+- 2 packets of vanilla sugar
+- 400g flour (500g if using yoghurt)
+- 2 packets of baking powder
+- 1L sunflower oil for frying
+- (Optional) icing sugar
+- (Optional) Alcohol by eye so that they do not soak up so much oil
+
+## Directions
+
+1. Mix ingredients (quark, eggs, sugar, flour, baking powder) in one bowl.
+2. Pour the sunflower oil into a cooking pot and heat up the hotplate
+3. Form balls from the dough and put them into the cooking pot
+4. Once they are brown-ish, put them onto a plate
+5. (Optional) add icing sugar
+6. Enjoy!
+
+## Contribution
+
+- Kirill Schmidt - [EduGit](https://edugit.org/k1r1ll)
+
+;tags: german fry sweet cheesefare