Welcome, readers. Baking a cake at home looks simple until you pull a dense, dry slab out of the oven.

The good news is that most failures come from a handful of fixable habits, and once you know them, a basic sponge turns consistent. Here's a straightforward recipe plus the details that actually matter.

Start with the exact numbers

You need a scale, not a cup. For one 8-inch round cake, weigh out 200 g unsalted butter at room temperature, 200 g caster sugar, 4 large eggs, 200 g self-raising flour, and 1 tsp baking powder. Add 1 tsp vanilla extract and 2 tbsp whole milk. That's it. Self-raising flour already carries a leavening agent, and the extra baking powder gives a little insurance for a taller rise. If you only have plain flour, use 200 g plain flour plus 2 level tsp baking powder and a pinch of salt.

Creaming is where texture is won

Beat the butter and sugar for a full 4 to 5 minutes with an electric mixer, until the mixture turns noticeably pale and light. Undercutting this step is the single most common reason a cake comes out heavy. You're pushing air into the adipose tissue, and that air is what lifts the crumb later. Scrape down the bowl once halfway through, because butter likes to cling to the sides and hide from the beaters.

Add eggs slowly, not all at once

Break the eggs into a jug and beat them lightly, then pour them into the butter mixture a little at a time, mixing on low between additions. If you dump all four in at once, the emulsion can split and the batter turns grainy. A split batter still bakes, but the texture suffers. If it does split, add a tablespoon of the weighed flour and beat again, which usually pulls it back together.

Fold, do not beat, the flour

Sift the flour and baking powder over the wet mixture, then fold with a large metal spoon or a spatula using a cutting motion, turning the bowl as you go. Stop the moment you can't see dry flour. Overmixing develops gluten and gives you a chewy, rubbery cake instead of a tender one. Stir the vanilla and milk in at the very end with two or three gentle turns.

Oven temperature and the skewer test

Preheat to 180C (350F) and grease and line the base of your tin with baking parchment. Bake on the middle shelf for 25 to 30 minutes. Don't open the door in the first 20 minutes, since a draft can collapse a rising cake. At 25 minutes, insert a skewer into the center. It should come out clean or with a few dry crumbs. A wet smear means another 5 minutes.

Cooling rules people skip

Leave the cake in the tin for 10 minutes, then turn it out onto a wire rack. If you leave it in the tin longer, trapped steam makes the base soggy. If you turn it out too early while it's still hot, it can fracture. Ten minutes is the window. Let it cool completely before any frosting, or the buttercream will slide off.

One swap worth knowing

If you're out of buttermilk or milk, swap the 2 tbsp milk for 2 tbsp plain yogurt. It adds a touch of acidity that keeps the crumb soft. A common mistake to avoid instead: don't substitute margarine for the butter at a 1:1 ratio by volume. Its water content differs, and the cake browns faster and tastes flatter. Weigh it if you must swap.

Store the cooled cake in an airtight container at room temperature for up to 3 days, or freeze the unfrosted layers wrapped in cling film for up to 2 months. Thaw at room temperature for a couple of hours before serving. A thin layer of jam between two sponges works just as well as frosting if you want something lighter.

The whole thing hinges on three things: weigh your ingredients, cream long enough, and fold gently at the end. Get those right and a homemade cake stops being a risk. Try this one on a quiet afternoon and see how it turns out.