Spiced Red Snapper with Saffron Polenta

Peckham has a wealth of good fish shops, and you can buy myriad strange fish with pretty colours and exotic names. I thought at first the fishmongers (mainly Pakistani or Indian) were fairly monosyllabic, and found the whole process of buying from them intimidating. But, silly me, I had made the mistake of telling them what I wanted and buying accordingly. I have since found that when you bother to solicit their advice, you are rewarded with an animated smile and a fount of knowledge is put