For one pan of onions, choose a portable induction hob if your frying pan is induction-compatible and the hob’s pan-size and low-setting controls suit you. A conventional electric hot plate is worth considering if keeping a non-magnetic pan matters more. Either way, plan to turn the heat down and stir regularly rather than choosing by maximum wattage alone.
If you are cooking onions slowly in one pan, look closely at the available low settings. Waitrose & Partners’ caramelised-onion recipe calls for very low heat and regular stirring for about 30 minutes after the initial cooking stage.
Your frying pan may decide the hob type. Induction requires compatible cookware; VonShef says its conventional hot-plate example accepts aluminium, copper, cast iron and non-magnetic stainless-steel pans.
If you cook with one pan and put the appliance away afterwards, compare its dimensions with the space available for both use and storage. Leave a clear, dry position for cooking rather than judging fit by storage size alone.
For caramelising onions in one pan, establish whether your frying pan works with induction, then compare low-heat controls and the space the appliance needs.
| Concern | What to check | Who this matters to |
|---|---|---|
| Gentle heat | Compare manual settings and the lowest published power. VonShef lists 200W for its single induction hob; Tefal lists 450W for the IH201840. Neither figure guarantees the same pan temperature. | If I am cooking onions slowly, I want to reduce the heat as they soften rather than rely on a high maximum rating; around 39% of consumers put gentle-heat control first. |
| Pan compatibility | Check the pan’s induction marking and base size before choosing induction. Tefal specifies a 12cm–25cm pan base for the IH201840; otherwise, check a conventional plate’s stated cookware compatibility. | I want to keep using my non-magnetic frying pan rather than replace it for induction; roughly 23% of consumers put existing-pan compatibility first. |
| One-pan footprint | Compare the number of zones and the appliance’s external dimensions with your worktop and storage space. | With only one pan in use, I need a hob that fits where I cook and where I put it away; around 23% of consumers prioritise a compact one-pan setup. |
| Safe placement and care | Allow a stable, heat-resistant, dry position and check the plug and lead before use. A timer or lock does not replace supervision. | When cooking around water and food splashes, I want a clear place for the hob and a routine I can supervise; roughly 15% of consumers prioritise safe placement and upkeep. |
A high rating does not tell you how gently a hob can cook once the onions soften. Waitrose & Partners’ method calls for very low heat and regular stirring for about 30 minutes.
Compare manual settings and the lowest published power, where available. Treat a timer as an aid to keeping track, not a replacement for checking the pan.
An induction hob needs compatible cookware. The Tefal IH201840 also specifies a 12cm–25cm pan-base range, so material alone is not the only fit check.
Check your pan’s induction marking and base diameter. If keeping a non-magnetic pan is essential, compare conventional hot plates with stated compatibility for that material.
Those controls do not stir onions or make an operating appliance safe to leave unattended. Electrical Safety First advises against touching electrical equipment with wet hands or leaving appliances operating unattended.
Keep the worktop clear and dry, inspect the plug and lead before use, and stay nearby to adjust the heat and stir.
A second zone may be useful for other meals, but VonShef’s cited double hot plate measures 46cm × 28cm and needs space for a two-pan appliance.
Decide whether you regularly cook with two pans before giving up worktop and storage space for an extra zone.
These manufacturers’ specifications describe the models named here, not every hob in each brand’s range.
The IH201840 is a single induction option to examine if you already have a suitable frying pan and want published power and timer settings.
The SDA2771 is a single induction model for cooks comparing adjustable controls and timer length.
VonShef provides examples of both an induction hob and a conventional hot plate, making cookware compatibility an important distinction between the models.
For cooks considering induction, this portable hob is an option to compare with your frying pan and available worktop space. Check its lowest setting if gentle onion cooking is your main reason for buying.
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For one-pan onion cooking with an induction-compatible frying pan, the 10 power settings give you controls to compare; check the lowest setting and pan fit before buying.
Look for adjustable low settings, not just a high maximum wattage. Waitrose & Partners’ caramelised-onion method turns the heat very low and calls for regular stirring for about 30 minutes after the initial stage; a preset does not replace watching the pan.
It will work only if it meets the hob’s induction-cookware requirements. Check the pan’s induction marking and the model’s permitted base size: Tefal specifies 12cm–25cm for the IH201840. If you need to keep an aluminium, copper or non-magnetic stainless-steel pan, VonShef lists those materials as compatible with its cited conventional hot plate.
No: stay nearby to adjust the heat and stir, even if the hob has a timer or lock. Electrical Safety First advises against leaving electrical appliances operating unattended and against touching switches or electrical equipment with wet hands.
A UKCA mark is not the only marking recognised under the applicable Great Britain guidance. Department for Business and Trade guidance dated 31 March 2026 says CE marking continues to be recognised alongside or in place of UKCA marking for products covered by that guidance in Great Britain. Check the marking and instructions for the specific appliance; Northern Ireland follows different processes.