21 August 2026
The four places calories hide in Italian cooking
Half the fear people have about Italian food is aimed at things that are basically free. Tomatoes, beans, greens, herbs, garlic, chilli, anchovies, capers and wine cost you almost nothing and do most of the flavour work.
Before writing a single recipe for the Italian book I put the whole cuisine through a spreadsheet, matching every common ingredient to its row in USDA FoodData Central and McCance and Widdowson. The weight sits in four places, and only four.
Olive oil
At 884 kcal per 100g, it is the most concentrated thing in any kitchen. A generous glug into a pan is around 250 kcal you did not count. A tablespoon poured by eye is anywhere between 12g and 25g depending on your wrist, which is a 115 kcal swing you did not choose. Weighing oil is the single habit that changes the most, and it takes four seconds.
Deep-fried aubergine
Aubergine is a sponge. Raw it is 15 kcal per 100g. Deep-fried it is 302, and that difference is entirely oil that went somewhere. Roasting instead, with a measured spoonful, is the largest single saving available anywhere in Italian cooking: 302 kcal per 100g down to about 60.
Hard cheese and cured pork
Parmesan is around 390 kcal per 100g and guanciale is mostly fat by design. Both are doing real work, which is why this is where the honest trade-offs live. You can use less. You cannot use none, and anyone who tells you otherwise has not cooked it.
The pasta itself
Dried pasta is about 370 kcal per 100g and a plate of pasta is mostly pasta. Cutting the sauce and leaving the mountain of spaghetti alone is theatre. 100g a head is the number every Italian recipe assumes. Weigh what you actually cook. Mine was 140g, after a decade of cooking professionally.
Butter and cream matter in the north, but they are not the national story the way those four are.
The full set of 15 swaps, with what each one saves and what each one costs you, is free at /swaps.
The swap kit is free, and it is the part of the book you would use most.