Hyphens plan the roll size.
Draw the roundish lower part.
Now distribute 4 dredging and draw the top part of a long loaf.
Connect curves. Draw cuts on a long loaf.
Light tone make shading of a bottom, area of dredging (cuts) — shading curls.
More dark tone make shading of top of a long loaf, where a zazharisty crust.
Make shading even more, considering transitions of tones. make a shadow under a roll.
Now shade, a rubber can add patches of light as we did in a lesson about a flower, a tulip or a rose.