Frozen diced white onion refers to a deep-processed seasoning vegetable product made by quickly freezing fresh white onions (bulb parts) after dicing through low-temperature quick-freezing technology for long-term preservation. Using “quick-freezing” technology, it maximizes the retention of white onions’ pungent flavor, natural aroma, and nutritional value, with each piece maintaining a crisp texture and pure white color (some with a pale purple hue), akin to fresh white onions. This convenient frozen form breaks through seasonal limitations (fresh white onions are mainly harvested from late spring to early autumn), making it a versatile seasoning ingredient for households, catering services, and busy lifestyles. It shares the same high sulfide content (including allicin, thiosulfinate, etc.) and high-fiber profile as fresh white onions (~2.7g fiber/100g) and can be quickly cooked, perfectly adapting to modern efficient living needs.

Key Advantages​

  1. Flavor preservation: Quick-freezing locks in over 90% of volatile sulfides (e.g., allicin, thiosulfinate) before white onion cells fully freeze, maintaining its pungent natural flavor nearly identical to fresh white onions.
  2. Nutrient retention: Low-temperature quick-freezing minimizes nutrient loss, preserving abundant vitamin C (7mg/100g), dietary fiber (2.7g/100g), and potassium (146mg/100g), matching the nutritional profile of fresh white onions.
  3. Convenience: No need for washing or cutting (some products are pre-processed). Thawed dice can be directly used for stir-fries, cold dishes, soups, or as a dip, releasing aroma in 30 seconds and boosting cooking efficiency.
  4. Consistent texture: Standardized freezing technology ensures uniform crispness in every piece (no softening or coarse fibers), maintaining a refreshing crunch even after cooking, unlike fresh onions that may degrade in texture if stored improperly.
  5. Healthy and natural: Low in calories (~40kcal/100g) and free of artificial additives (e.g., preservatives, colorants), it is rich in sulfides (with antibacterial and antioxidant properties), making it an excellent low-calorie seasoning for balanced diets.

Application Scenarios​

  1. Daily home cooking: Thawed dice are directly added to stir-fries, cold dishes , or soups to instantly enhance flavor.
  2. Restaurant seasoning: Used in dips, noodle dishes, or as a garnish to elevate dining experiences.
  3. Healthy light meals: Aromatic topping for salad bowls (with lettuce, chicken breast, avocado) or blended into smoothies (with apples and spinach) to add fiber and flavor.
  4. Quick convenience: Soaked in boiling water (1 minute) or microwaved (30 seconds) to quickly enhance instant noodles, rice balls, or other fast foods.

Quality Tips​

  1. Store at a stable temperature below -18°C; avoid repeated thawing and refreezing (causes onion dice to absorb water, soften, and lose texture).
  2. Control reheating time (microwave on medium-high for 30 seconds, boiling water soaking for 1 minute). Avoid prolonged high heat (causes softening and aroma loss).
  3. Choose pure white onion dice (no mixed vegetables or seasonings) to ensure pure flavor and concentrated aroma.