1. A pretzel is a type of baked bread product made from dough most commonly shaped into a twisted knot. Pretzels originated in Europe, possibly among monks in the Early Middle Ages.
2. A croissant is a buttery, flaky, viennoiserie-pastry named for its well-known crescent shape. Croissants and other viennoiserie are made of a layered yeast-leavened dough.
3. Baba is a type of thick, round, heavy bread that is prepared either plain or with various fillings. Originated in china
4. Sourdough is a dough containing a symbiotic combination with yeasts. It is one of the principal means of biological leavening in bread baking, the others using cultivated forms of yeast.
