What is joppie sauce?
Yellow, creamy, faintly curried, studded with onion: joppie sauce is the Netherlands' cult fries sauce, and the question every visitor asks at the counter. Here is what it is, how it tastes, and why a Tripadvisor review here is titled simply "Joppie sauce for the win".
The mystery sauce
Joppie was invented in the Dutch province of Drenthe in the 1990s, and its exact recipe is famously kept secret. The base is unmistakable though: a mayonnaise-style sauce turned pale gold by curry spices, sweetened a touch, with fine onion through it. It sits somewhere between fries sauce, curry and piccalilly, which is exactly why nobody can describe it and everybody finishes the cone.
What it does to a fry
Where mayonnaise coats and ketchup cuts, joppie clings. The onion gives it texture, the curry warmth without heat. It flatters a crispy fry without drowning it, which makes it a favourite first step beyond the classics. In the shop's own ranking of hearts, it stands with mayonnaise and oorlog among the most ordered choices on the wall.
Joppie at the Sausmeester
At Vleminckx, joppie hangs on the regular wall, sauce number 7, between sambal and piccalilly. Order it straight, or ask for half joppie, half satay if you want the unofficial local hybrid. Every sauce is a modest add-on to the cone, as the sign says: price not includes saus.
Beyond joppie
If joppie wins you over, the sauce guide is your map to the other twenty-plus jars, from samurai to andalouse. And if you are still choosing your first cone, start with the best fries in Amsterdam.