What ratio is used for the oil and vinegar mixture?

Using a 50/50 ratio, erring to oil, for the oil and vinegar mixture is the correct choice because it strikes a balance between the two ingredients. This composition allows the oil to dominate slightly, which is often preferred in dressing to create a smoother texture and milder flavor profile, while still incorporating enough vinegar for acidity and flavor. Mixing equal parts ensures that the dressing is well-balanced, allowing the richness of the oil to complement the tanginess of the vinegar. This approach is common in culinary practices, particularly in making vinaigrettes and dressings, where the goal is to create a harmonious blend that enhances various salads and dishes.

In contrast, other ratios might create a noticeably stronger flavor from one ingredient, potentially overwhelming the dish or making the dressing too heavy or too sharp for certain palates.