Red oil lotus root is a hot-and-sour, crisp Sichuan-style cold dish, and both the method and the choice of lotus root matter.

Red oil lotus root is a cold dish made with fresh lotus root as the main ingredient and red oil as the main seasoning, and it is very common among Sichuan-style cold dishes. After the lotus root slices are blanched, they are tossed with red oil, minced garlic, vinegar, sugar, salt and other seasonings; the finished dish is bright red, hot-and-sour and appetizing, with a crisp texture, and is often served as an appetizer or a dish to go with drinks.

To make this dish well, choosing the lotus root is key. For cold dressing, crisp lotus root is best; generally, white-flower lotus root with a slender body, smaller holes in cross-section and a lighter weight has a lower starch content and becomes crisper and more tender after dressing, while starchy, mealy lotus root is better suited to stewed soup. After peeling and slicing the lotus root, it should be soaked in clean water immediately, and a little white vinegar can be added to the water to prevent oxidation and blackening.

The blanching step also has its finer points: the time should not be too long, and once the slices are just cooked, they should be scooped out into cold water right away to keep them crisp. Red oil is generally made by pouring hot oil over dried chilies or chili flakes, so it is fragrant without being harsh; when dressing the lotus root, the ratio of red oil to vinegar and sugar can be adjusted to personal taste, and finally chopped scallions, toasted sesame seeds or cilantro can be sprinkled on to enhance the flavor.

Lotus root contains carbohydrates, dietary fiber and various minerals; the cold-dressed preparation is refreshing and not greasy, and the amount of oil used can also be controlled as desired. It should be noted that cold-dressed lotus root slices are best eaten soon after they are mixed, as they soften if left too long; people with weaker digestion can blanch the lotus root a little longer to make it easier to digest. For growers, crisp lotus root varieties are more popular in the cold-dish market, and high-quality lotus root is precisely the foundation of this dish's flavor.