An apparatus for producing a food product is disclosed. The apparatus comprises: an enclosed vessel for holding the food product, the vessel having a first end wall, a second end wall opposite to the first end wall, and a side wall between the first and second end walls； a first agitator rotatably mounted to the first end wall, the first agitator extending inside the vessel towards the second end wall； and a second agitator rotatably mounted to the second end wall, the second agitator extending inside the vessel towards the first end wall. The first agitator is unsupported by the second end wall, and the second agitator is unsupported by the first end wall.
