This is somewhere between a cake and a tart. It is my friend Marta’s mother’s recipe. When I made it and took it to Marta you could see she was nicely surprised by my effort. It’s quite fun when you make someone’s own recipe and take it to them! Anyway, Marta was adamant that next time I use rennet apples as I had used whatever I could get that day. She said ‘No, no, no. Tttt, ttt, ttt. Rennet.’