Thomasina Miers’ recipe for roast pumpkin cake with ginger icing

Want a light, moist sponge cake? Then add pumpkin to the mixOne of the boons of modern life is how much easier it is to buy great ingredients. This is especially true of fruit and veg. Although it can feel extravagant to buy a niche vegetable variety when the standard is often much cheaper, the taste can be revelatory – and I reassure myself that this kind of ingredient is a steal compared with the cost of meat (healthier, too). I am also seduced by the notion that my pennies are working i