Sticky Ginger Cake with Lemon Icing

A good ginger cake is a dark, dense, sticky thing that improves with keeping, and it is one of the most forgiving cakes you can make. There is no creaming, no folding, no worrying about knocking out air; you melt, you mix, you pour and you bake, and what comes out is a deep brown, treacly, warming cake that gets better every day it sits in the tin. This is my version, spiced with three kinds of ginger and a crack of black pepper, and finished with a sharp lemon icing to cut all that sweetness.

Treacle, keeping and the north of England

Sticky ginger cake belongs to a broad family of British treacle cakes that includes parkin, the oatmeal-and-treacle cake traditionally eaten around Bonfire Night in Yorkshire and Lancashire, and the Jamaican ginger cakes sold in every corner shop. What they share is a reliance on black treacle and golden syrup, which do far more than sweeten. Treacle is the dark, bitter syrup left over from sugar refining, thick with minerals and a faint smokiness, and it is the source of the cake’s colour, its depth and, crucially, its keeping quality.

That last point is the secret of the whole genre. Treacle and syrup are hygroscopic, meaning they attract and hold water from the air, so a treacle cake actually gets moister and stickier as it sits, its flavour deepening and its crumb turning almost fudgy over two or three days. This is why traditional recipes tell you to bake parkin a week before you eat it. It is a cake designed for a time when baking day came once a week and everything had to last, and it rewards patience in a way most cakes do not. The same logic of deep, dark, keeping richness runs through a chocolate Guinness cake, where the stout and treacle do a similar job.

Three gingers, and the pepper

Most ginger cakes rely on ground ginger alone, which gives warmth but not much life. I use three forms, because each does a different job. Ground ginger provides the deep, dusty background heat baked right through the crumb. Chopped stem ginger, the pieces preserved in syrup, gives little pockets of sweet, chewy, intense ginger that you bite into. And a thumb of fresh grated ginger brings a bright, almost lemony heat and a living pungency that dried ginger loses. Together they give the cake a layered warmth that builds rather than sitting flat.

The crack of black pepper is my quiet extra. Pepper and ginger share some of the same pungent compounds, and a quarter-teaspoon of freshly ground pepper in the batter settles into a slow, lingering heat at the back of the throat that makes the ginger feel warmer and more grown-up. It is the kind of thing people taste without being able to name, which is exactly what you want from a twist. Use it freshly ground, since pre-ground pepper has lost most of its aromatic oils. A single dried chilli flake or two, ground fine, does much the same job if you want to push the heat a shade further, though the pepper alone keeps it subtle enough for children who claim not to like ginger.

The low oven, and why the batter is so wet

This is a very loose, pourable batter, wetter than most cakes, and that is deliberate: all that liquid is what gives the finished cake its dense, moist, sticky crumb. The trade-off is that it needs a low oven and a long, slow bake, around 150C fan for the best part of an hour, so the centre cooks through before the sugary edges catch and burn. The high sugar and treacle content means the outside colours fast, so resist the urge to turn the heat up to hurry it along. Stirring the bicarbonate of soda into warm milk just before mixing gives the cake a head start on its rise and helps the treacle’s acidity work with the raising agent.

Storage and making ahead

This is the rare cake that positively demands to be made ahead. Wrap it, un-iced, in foil once completely cool and leave it for at least a day, ideally three, before icing and eating; it becomes stickier, darker and more intensely flavoured as it rests. It keeps for a good week in a tin and freezes well for up to three months. Ice it only once you are ready to serve, since the lemon icing is best fresh and crisp. If you like, you can serve squares warm with custard or cream as a pudding, in which case skip the icing altogether.

Variations

Fold in a handful of sultanas soaked in a little of the stem ginger syrup for extra chew, or a scatter of chopped crystallised ginger on top of the icing for people who want the heat turned up. A spoonful of black treacle swapped for the same amount of molasses makes it darker and more bitter still. For a festive version, add a teaspoon of mixed spice and the zest of an orange, and serve it alongside a spoon of the same lemon-sharp cream you would put on the elderflower cake, so the brightness plays against all that dark, sticky warmth.