Add a Mesh Smooth modifier with 3-4 Iterations, depending on the level of detail you're after.
Let's create the pot handle now. Start with another, smaller Box, 24 x 24 x 20, with one segment on all sides. Move it in position, to the side of the main pot part.
Convert the little Box to an editable polygon (or add an Edit Poly modifier) then move upwards the bottom pair of vertices at the back of the handle like it's shown in the image above.
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