The seafood restaurant that ordered octopus for a regiment

The napkin math

Marisqueira do Cais sits a stone's throw from the fishing harbour of Vila Nova de Framil, and makes the best octopus rice on the coast — or so the regulars say, and Dona Fernanda isn't one to argue. The recipe has lived in her head for twenty years: a kilo of octopus, olive oil, potato, garlic, onion, bay leaf and coriander, for four people. For bigger groups, she'd multiply everything in her head, in a hurry, between a phone call and a pan on the stove.

Saturday's wedding had sixty guests — fifteen times the normal recipe. Dona Fernanda did the math on a paper napkin, leaning on the fish counter, with Mr. Amadeu waiting on the line for the order. A dozen and a half times one kilo comes to fifteen kilos. But between the noise of the kitchen and the rush to hang up before the stew burned, the napkin ended up with one extra zero: 150 kg.

Our heroes

One extra zero, multiplied by nine ingredients

Scaling a recipe up for a big group isn't one multiplication — it's nine, one for each ingredient, each with its own unit and its own rounding, done in your head while answering the phone and watching the oven. Nobody checks the napkin before calling the supplier, and one extra zero in fifteen slips by as easily as it would in a phone number.

Mr. Amadeu, on the other end of the line, didn't think twice either — a wedding for sixty is already a big order, and a hundred and fifty kilos of octopus, for someone who sells fish every day, just looked like a good Saturday.

How Recipe Explosion prevents the next extra zero

At Marisqueira do Cais, the octopus rice is now defined once in Mise en Place: all nine ingredients, with the exact quantity of each, per portion. When Dona Fernanda plans an event, she only enters how many portions she needs — the app explodes the recipe on its own, adds it to everything already planned for the week, and returns the full shopping list, with the estimated cost included. No napkins, no head-multiplication, no extra zero hiding between the stew and the phone call.

And if the recipe ever changes — one more clove of garlic, less potato — Dona Fernanda updates it once, and every calculation from then on is already correct.

Today, twelve guests or ninety — it's just one number

The recipe hasn't changed, and Dona Fernanda still makes the best octopus rice on the coast. What changed was the math: today, for any event size, it's just a matter of adjusting the number of portions in Mise en Place and sending the exact list to Mr. Amadeu — who, it should be said, still thinks the correct fifteen kilos also make for a good Saturday.

Recipe Explosion is part of the Mise en Place app, where Marisqueira do Cais also organises its catalogue of ingredients and preparations, calculates the margin on every dish, and generates the whole week's shopping list — all in the same place.