This is the image of the dish I am trying to make in Blender, I am having hard time with the texture and randomness of it as all the pores are not exactly circular.
I also needed help with the rough and irregular edges.
This is the image of the dish I am trying to make in Blender, I am having hard time with the texture and randomness of it as all the pores are not exactly circular.
I also needed help with the rough and irregular edges.
Simple speaking, with basic sponge textures or wall pores textures we can make idli textures.
found a "sponge texture" from google images.

then converted it to blackandwhite image using Photoshop

and used that blackandwhite image to covert it to NormalMap image Filters>3D>NormalMap(or)BumpMap.

Made a simple scene containing a plate and idli. Making chutney would take quite a time.. so just added a plate and idli. Then unwarped idli and added above textures and hence this final render fellow indian.

or for detailed texturing try what @Robin Betts said in comments section.