Below, you'll see any text that was highlighted with comments from the reviewer.
The word choice and the amazing use of some pretty good adjectives at the right places are really, really good in this piece. The writer's affection for her mother is genuinely evident here.
The way the writer has brought varied themes—of trying to keep own's culture alive while living in a non-native land, her love for her mother, and more than anything else, her mother's love for her daughter—is excellent, and makes it so much more than food!
I cannot really think of any part that needs expansion.
Maybe the beginning about the description of the process of making paniyarams could be more appealing if the writer uses present perfect tense while describing her mother making it, something on the lines of 'then she crushes the walnuts...'
This piece is written very well. The imagery, adjectives, descriptions, all merge to form a piece that transports you to the writer's world.
I really enjoyed reading and reviewing this piece. All the very best for your writing!