First time hearing about clay tawa. Amazing how each community has adopted such variations. You don’t need to oil the tawa at all? Completely oil free dose. 👌
In mangalore and udupi, kundapura side this is common ,kapparotti, but we aad boiled white rice, not avalakki. This is very good combination for fish curry not chutney , without oil we make, just salt water slight aply to mudd thava.