This comforting dish was created by Danielle Postma, who is now back home in South Africa running her own blossoming food business, Moema's. We would have loved to take some credit for Danielle's success but she actually had it all before coming to Ottolenghi. Danielle's big personality and warmth make everybody fall in love with her in an instant, She has a natural gift for presentation and, like herself, her food constantly smiles. This d sh is simple but effective, due to the way the potatoes are arranged in the baking dish. You can prepare everything a day in advance and have it ready in the fridge to just pop in the oven, The sage can be replaced with thyme, or you could use both. Make sure you choose orange-fleshed sweet potatoes (as opposed to the paler variety).