โญ Margarine (Best Vegan Option)
1:1 (1 tablespoon margarine per 1 tablespoon butter)Margarine is formulated to replicate butter's fat composition and melting characteristics, which helps maintain the emulsion and mouthfeel in teriyaki sauce. Its neutral flavor profile allows the sauce's sweet and savory elements to shine.
When using margarine, choose a high-quality, unsalted variety to avoid altering the sauce's salt balance. Melt it gently to integrate smoothly without separating.
The final sauce will have a texture and richness very close to that achieved with butter, with minimal flavor deviation, making it the most reliable substitute.