DeliOne Microwave Steam Cooker

The premise is simple: put food in a sealed silicone cooker, place it in the microwave, and let trapped steam do the work. According to the maker, the approach needs little to no cooking oil and keeps ingredients moist, with chicken breast staying tender through the center and vegetables keeping their colour.

Claims on nutrition and speed

DeliOne says steaming this way retains up to 50% more nutritional value than boiling, since nutrients such as vitamin C in broccoli or omega-3 fatty acids in fish are not leached into hot water. The maker also claims cooking time can be cut by up to 70%, citing an example in which frozen chicken curry that would take 15 minutes to heat reaches eating temperature in about 5 minutes. It adds that frozen ingredients can go straight in without a separate thawing step.

Material and design

The cooker is made from platinum silicone, which the maker says tolerates temperatures from -20℃ in the freezer to 220℃ in the oven without cracking or deforming. That allows a dish to be frozen, then reheated in the same vessel. The silicone is described as non-stick, 100% BPA-free, of a safety grade used in baby products, and dishwasher-safe.

• Two sizes: small for single servings such as soup, creamy oats or side dishes; large for fish fillets, chicken breast or larger batches of vegetables, suited to mains for two
• Sealed structure that the maker says minimises steam leakage and heats food evenly
• Claimed energy savings in the microwave thanks to the sealed design
• Scandinavian-inspired styling intended to sit on a kitchen counter

Pairing both sizes, the campaign suggests, lets users steam salmon in the large cooker while preparing a carrot and pumpkin side in the small one. Independent verification of the nutrition, time and energy figures is not provided in the source material.