The Beurre Blanc Has Rempah in It

The beurre blanc at Loca Niru is still a beurre blanc. It just has rempah in it.

That sentence describes the restaurant. A beurre blanc is a French mother sauce, butter and wine and shallot emulsified to a glossy stability. Chef Shu Kubota infuses his with rempah, the Peranakan spice paste, so the sauce arrives recognisably a beurre blanc, emulsified and buttery and French, while carrying the rempah's lemongrass-galangal-chilli warmth through it from within. The sauce reads as a beurre blanc first and a Nyonya sauce second. The French structure holds; the Southeast Asian flavour inhabits it.

That is a third route through a fusion that usually goes one of two predictable ways, and it is why Kubota's late-2025 debut held my attention.

Southeast-Asian-influenced fine dining, almost as a rule, dissolves the European technique entirely into the local cuisine. The technique goes invisible, the cuisine leads, and a diner tastes the region rather than the method. Or it does the lazy inverse and bolts a local garnish onto an otherwise French plate, a curry leaf here, a sambal dot there, the European food essentially intact under a thin exotic veneer. Both routes are well-trodden. Loca Niru takes neither.

The restaurant opened on the sixth of November 2025 on the upper floor of the restored House of Tan Yeok Nee, an 1885 mansion on Penang Road, a heritage-grand setting that does quiet work around a contemporary tasting room. Kubota is Nagano-born, trained in French technique with a Japanese sensibility, and he spent roughly eighteen months researching Southeast Asian regional ingredients before opening. The direction he arrived at is the third route: keep the French mother sauce deliberately visible, and infuse the local spice into it. The pan-seared isaki is where it is clearest.

A sauce that keeps its structure

The isaki, a Japanese grunt fish, arrived with a shatter-crisp skin and a clean French sear, over the Nyonya beurre blanc, with tomato-lemon butter and pickled zucchini around it.

The first bite was the test, and the test was the sauce. The beurre blanc was glossy and emulsified, the texture a French saucier would recognise, the butter held in suspension, the structure intact. And through it ran the rempah: the lemongrass, the galangal, the chilli warmth, infused into the sauce rather than spooned over it. The sauce did not taste like a curry that had borrowed a French name. It tasted like a beurre blanc that had been taught to carry a Peranakan spice paste. The French structure held the shape and the rempah moved through it, sitting inside the sauce rather than replacing it.

That distinction is what Kubota is after. The fashionable move, the Seroja move, the one the most celebrated Southeast-Asian fine dining makes, is to dissolve the technique so completely that the diner tastes only the cuisine. Kubota refuses it. He keeps the beurre blanc legible on purpose. The diner is meant to recognise the French sauce and then discover the rempah inside it, which is a different pleasure than tasting a seamless local dish. It is the pleasure of watching a familiar form do an unfamiliar thing, the mother sauce holding its shape while carrying a flavour it was never built for.

The buah keluak bread, served early, runs the same logic in reverse. It is a French bread service, the loaf enriched with the earthy, fermented buah keluak paste, dark and savoury where a French bread is pale and sweet. Again the form is French and the content is Peranakan, the infusion happening inside the structure rather than dissolving it. The bread and the beurre blanc are the same idea at two ends of the meal.

Where the form wins too completely

The infusion direction has a risk, and one of the mid-tasting courses showed it.

It was a beautifully executed plate, the French technique immaculate, the structure precise. But the Southeast Asian flavour had receded to a whisper. The infusion was so subsumed into the French technique that the dish read as French food with a faint exotic note rather than as the genuine meeting the isaki achieved. Where the beurre blanc held the rempah and the French structure in balance, this course let the structure win too completely. The technique swallowed the flavour it was meant to carry.

That is the inverse of the dissolve-into-the-cuisine risk. A kitchen that dissolves the technique risks losing the method; a kitchen that keeps the technique visible, as Kubota's does, risks the method dominating the flavour. The isaki holds the two in balance. The mid-course did not. The infusion-inside-the-form approach is harder than it looks precisely because the form is strong, and a strong form wants to win.

A diner ordering the tasting should know the approach is uneven across the eight courses. It lands beautifully where the local flavour is given enough weight to inhabit the French structure, and it recedes where the structure dominates. The isaki is the approach at its best. The quieter courses are where the chef is still calibrating how much rempah a beurre blanc can carry before the butter wins.

The friction

The friction with Loca Niru is the friction of a steep debut.

At $298 for the tasting, the spend is high for a late-2025 opening from a chef still finding his level. A diner is partly betting on a cuisine in formation. The isaki shows the direction works, while the uneven mid-courses show it is not yet uniform. The price asks the diner to fund the calibration.

The other friction is the building. The restored mansion is shared among tenants; Loca Niru occupies the upper floor, but the heritage setting is not the restaurant's alone. The grandeur is real, and it is also borrowed. The diner is eating in a monument that several operations now share, which slightly dilutes the sense of a singular destination built around the cuisine.

The third is the approach's own unevenness. The infusion-inside-the-form direction is the restaurant's distinction and its inconsistency at once. It is genuinely interesting when the rempah inhabits the beurre blanc as an equal; it is merely competent French food when the structure dominates. The kitchen is still learning where the line sits, and the tasting crosses it in both directions.

What the room is for

Loca Niru is one of the rare Southeast-Asian-influenced debuts in Singapore that refuses both standard fusion routes. It neither dissolves the European technique into the cuisine nor garnishes French food with local notes; it keeps the French mother sauce deliberately visible and infuses the local spice into it. The rempah beurre blanc is the direction at its clearest. The buah keluak bread is the same idea at the meal's other end. The uneven mid-courses are where the form still wins too completely.

The pan-seared isaki, over a beurre blanc that stayed a beurre blanc while carrying rempah, was the dish that made the thesis legible. A Japanese chef trained in French technique who spent eighteen months learning Southeast Asian spice, and decided the most interesting move was to keep the French sauce recognisable and let the rempah live inside it, has found a fusion direction distinct from the two everyone else uses.

The beurre blanc is still a beurre blanc, just a Nyonya one, and that is what the restaurant is doing. On the isaki it is genuinely worth the trip, with the rest of the tasting still catching up to the dish that proves the idea.