Hong Kong shoppers reaching for frozen vegetables may want to reconsider their loyalties after the Consumer Council revealed that green peas pack a significantly greater nutritional punch than sweet corn kernels.
In a comprehensive test conducted between November and December 2022, the independent watchdog evaluated 24 pre-packaged frozen samples —10 sweet corn and 14 green pea varieties—sourced from supermarkets and department stores across Hong Kong. The findings, published in the council’s Choice magazine issue 563, challenge common perceptions about these freezer aisle staples.
Nutritional Divide: Peas Take the Lead
The results paint a clear picture: when it comes to key nutrients, green peas consistently outperform sweet corn. Dietary fiber content showed the most dramatic gap. Per 100 grams, sweet corn samples contained between 2.13 and 4.81 grams of total dietary fiber, while green peas ranged from 4.76 to 8.42 grams. Six corn products and five pea products qualified as “dietary fiber sources,” meaning they contain at least 3 grams per 100 grams of solid food. However, nine pea samples achieved the higher “high dietary fiber” designation of at least 6 grams—a distinction no corn product earned.
Vitamin C levels also diverged sharply. Sweet corn samples registered anywhere from undetectable levels to 6.5 milligrams per 100 grams, whereas green peas delivered a robust 7.9 to 21 milligrams. Ten pea brands met the “vitamin C source” threshold of 15 milligrams per 100 grams.
Beta-carotene, which the body converts into vitamin A, showed an even wider disparity. Sweet corn contained just 23.5 to 50.5 micrograms per 100 grams, translating to 3.9 to 8.4 retinol equivalents. Green peas, by contrast, boasted 233 to 362 micrograms, yielding 38.8 to 60.3 retinol equivalents—making them a superior choice for eye health and immune function.
Heavy Metal Traces: Within Safe Limits
While the nutritional news favors peas, the council also tested for contaminants. No samples contained mycotoxins, mercury, or antimony. However, trace amounts of lead, cadmium, and chromium were detected in some products. Three corn and 11 pea samples showed lead levels between 0.006 and 0.042 milligrams per kilogram, with M&S “Supersweet Sweetcorn” and Woolworths “Australian Pea” recording the highest concentrations in their respective categories. One corn brand, Meadows “Sweet Corn,” contained 0.006 milligrams of cadmium per kilogram. Chromium appeared in two corn and nine pea samples, ranging from 0.025 to 0.121 milligrams per kilogram, topped by EarthBound Farm “Organic Sweet Corn” and Woolworths “Australian Pea.” All levels remained below Hong Kong’s regulatory limits.
Top Performers: Value and Quality
The council awarded its highest five-star ratings exclusively to green pea products, including Birds Eye Petits Pois (HK$6.7 per 100g), GROWERS PRIDE Garden Peas (HK$5.1), and Meadows Garden Peas (HK$4.4). Four-star honors went to Meadows Sweet Corn (HK$4.4) for corn, and several imported pea brands from Almaverde Bio, Waitrose & Partners, Woolworths, and ORE-IDA, priced between HK$8.6 and HK$11.3.
What This Means for Hong Kong Consumers
For families navigating busy schedules and tight budgets, frozen vegetables offer convenience without sacrificing nutrition. “Many people dismiss frozen produce as inferior to fresh, but flash-freezing locks in nutrients at peak ripeness,” experts note. The council’s findings empower shoppers to make informed choices: green peas deliver more fiber, vitamin C, and vitamin A for comparable or lower prices, while sweet corn remains a respectable option for those seeking sweetness.
Consumers should check labels for origin and processing methods, and consider rotating between vegetable types for a balanced diet. As the debate over the humble tricolor mix continues, one thing is clear—the green pea has earned its time in the spotlight.
Prices and product availability may vary. For the full report, visit the Consumer Council’s website.