Lemon Meringue Pie with Italian Meringue

There is a particular kind of person who claims to dislike lemon meringue pie, and almost always it turns out they have only ever met the bad version: a wedge of luminous yellow jelly under a weeping, beige slick that slides off the moment a knife touches it. That pie deserves its reputation. This one does not. This is the pie that converts the doubters, and the secret is not in the lemon at all. It is in the meringue.

1 Why Italian meringue changes everything

Most home lemon meringue pies use a French meringue, which means raw egg whites whisked with dry sugar and then baked. It works, sort of, but it is temperamental. It weeps. It beads with sugary tears. It deflates if you so much as look at it sideways, and the underside often stays raw and slippery where it meets the curd.

Italian meringue solves all of this by cooking the whites with a hot sugar syrup as you whisk. The syrup, brought to 118C, pasteurises and stabilises the foam so thoroughly that the finished meringue is glossy, marshmallow-firm, and almost bombproof. It holds its peaks for days. It does not weep. You can slice through it cleanly and the slice stands up on the plate like it means it. The small extra faff of a sugar thermometer buys you a result that genuinely looks and behaves like the pastry-shop version.

2 The clever twist: a properly fierce curd

The other place pies go wrong is timidity with the lemon. Six lemons sounds like a lot. It is not. The meringue is sweet and rich enough to swallow any amount of sharpness, so the curd needs to be aggressively, mouth-watering sour to cut through it. I cook the curd with cornflour as well as yolks, which gives it the backbone to slice neatly without setting it to rubber, and I finish with a generous lump of butter for shine and a silky finish on the tongue.

Use unwaxed lemons if you can, because you want all that zest, and roll them hard on the worktop before juicing to wring out every drop. Taste the curd before it goes in. It should make you wince slightly and then immediately want another spoonful.

3 Building the pie

Start with the pastry, because everything else hangs on it. A proper blind bake is non-negotiable here; a soggy base under wet curd is a sad thing. Bake it until it is genuinely golden and dry, not just set, then leave it in its tin. I like to add the curd while it is still warm and the meringue while the curd is warm too, because the two layers fuse slightly at the join and you avoid the gap that lets meringue slide off.

When you pile the meringue on, take it right to the edge of the pastry. That seal is what stops shrinkage and weeping. Swirl it into dramatic peaks with the back of a spoon, then torch it. A blowtorch gives you the most control, but a very hot grill works if you watch it like a hawk; meringue goes from beautifully bronzed to charcoal in about ten seconds of inattention.

4 Tips and small mercies

Room temperature matters more than people admit. Cold whites take longer to whisk and a cold curd will skin over before the meringue is ready. Get everything organised, mise en place style, before you boil the syrup, because once that sugar hits temperature it waits for no one.

If you do not own a sugar thermometer, the soft-ball test works: a drop of syrup in cold water should form a soft, squishable ball. And if the whole project feels like a lot for a weeknight, the pastry case and the curd can both be made a day ahead and chilled; only the meringue needs to be same-day.

5 Variations worth trying

Swap a third of the lemon juice for lime to nudge it towards a key lime profile, or fold a little finely grated ginger into the curd for warmth. A scrape of vanilla seeds through the meringue is quietly lovely. And for a grown-up version, a tablespoon of limoncello stirred into the cooling curd does no harm at all. Whatever you do, do not skimp on the sour. A polite lemon meringue pie is a contradiction in terms.