Mr D’s 3L Thermal Cooker

(7 customer reviews)


This Mr D’s 3L Thermal Cooker is suitable for 2 to 6 people and due to the cast iron ring on the base of the inner pot can still hold it’s temperature for up to 4 to 5 hours when 50% full. The Mr D’s Top Pot will fit this cooker for cooking two dishes at the same time.

135 in stock


Mr D's £L Thermal Cooker baseThis  Mr D’s 3L Thermal Cooker is suitable for 2 to 6 people and due to the cast iron ring on the base of the inner pot can still hold it’s temperature for up to 6 hours when 50% full. The cooker is so efficient that it will continue boiling once placed into the insulated outer container for around 5 minutes and this ensures maximum start temperature for powerless cooking.

Mr D's £L Thermal Cooker handlesThe outer container has built in handles for easy carrying and these fold flat when not in use. The outer container has a vacuum in the twin stainless steel walls of the out container. This form of insulation is still the most efficient form available.

Mr D's £L Thermal Cooker clips


The lid of the outer container locks for safe carrying and storage in your boat, motorhome or caravan.

IMPORTANT: This cooker like Le Creuset pans has a cast iron base so it MUST always be put into the outer container when hot or placed on a suitable trivet as if put directly on a work surface it will burn it.

Mr D's 3L Thermal Cooker heat retention chart

Additional information

Weight 3.5 kg

7 reviews for Mr D’s 3L Thermal Cooker

  1. Christophe Ellis (verified owner)

    Received my 3 litre Thermal Cooker today. It was well packaged. It looks well made and solid and the enclosed instructions clear. I used it to make a broccoli based soup, with potatoes and carrots. Soup cooked for 5-minutes on the stove before being placed in the Thermal Cooker. 2-hours later we had it for lunch, piping hot and thoroughly cooked. A simple recipe yes, but it’s given me the confidence that the cooker can be used to cook meat dishes over a longer period. Brilliant piece of kit.

  2. chris (verified owner)

    I bought my 3L about 3 weeks ago I think and we have cooked loads in it already.
    Yesterday was the pork chops and apple cider which was yummy.
    The 3L is enough for 2 people with pud in the top pot or 3 people with veg in the top pot. Cant wait to take it camping.

  3. Paul Goddard (verified owner)

    Used loads of times in the short period we’ve had it.
    My partner and I don’t like leaving any home appliances turned on when we’re out so an electric slow cooker has never been an option. This thermal cooker has been a god send, we knew about the tech but didn’t really take much notice until Foxes Afloat used one and we got very interested. Still experimenting with some meals we’ve not considered before and wondered if a cake tin would double up for baking bread, hopefully somebody will give us the answer, only to keep expenditure down… Would give it 5 stars but slightly expensive for us but this opinion may change with what we’re saving.

  4. Mick de Pomerai

    A great piece of kit for stews & casseroles; we bought one to use on our boat but find ourselves regularly using it at home too. Currently making chicken stock – without the house being permeated by the smell!
    I’d give it 5 stars but I think the insulation of the plastic top could be further improved: the thin bit over the pan lid causing the main heat loss. The metal top label helps reduce radiation loss but it isn’t enough, really. Improving this could increase cooking times by 2 hours at a guess.

  5. Lyn Marks

    I’ve had my Mr D for over a year and love it! I’ve passed the info to several friends who have also bought it!
    I’ve cooked all of my beetroot from the allotment. I use it to make salves where you have to warm the oil to extract the properties. Bread in the cake tin, curries, stews…… it’s saved so much energy. My electric bill is still manageable and allows me to use the energy I’ve saved to heat my home! Absolute must with energy cuts coming

  6. Keith Adams

    Had my 3 litre thermal cooker for a few years now and used it on boats, in my campervan and just taking hot food out to my builder working in the cold. Unfortunately, he dropped the glass lid and it smashed on a marble surface. Fortunately, a quick visit to Mr D’s website and I found he offers replacements, so I will be back using my wonderful cooker again soon.

  7. Ruth Turner

    We’ve had our thermal cooker for years bought at the NEC after meeting the original Mr D. It must have been about 2009 or 2010 or so and he was one of the nicest people I’ve met. I always feel happier buying from someone genuine who takes the time to talk to you and is pleasant to deal with. He told us so much info about it. It was one of the original 4.5l ones but sadly it got dropped and the outer broke. We decided the 3L version would suit us more anyway so bought it and we take more care!!!! But at least spare outers and things are available. Over the years we’ve had some amazing meals out and about carvanning or on day trips, but deciding that we do not use it enough and wanting to buy some extras (the cake tin) and such got me realising we should be using this at home to save energy. It shouldn’t just be our travel option. It should be integral to cooking a great range of the dishes I make. Tonight I’ve just done a bean chilli (we eat meat too) with rice in the top pot. Cooking rice in the top pot is arguably better than on the hob and a meal like this where I didn’t hard veg in ( just courgettes, onions peppers tinned pinto beans tinned tomatoes garlic and herbs and spices) means it was ready in about an hour but I left it about 30 mins more just to really be as flavoursome as possible. You knoe sometimes life just takes over and you do not think things through but now with renewed interest I am going to make the most of our thermal cooker at home and away! Saving gas in our caravan etc is fabulous because we do not need to renew our gas bottles as often but I should be saving gas at home (or electric from my pressure cooker). Can’t wait to try lots of things we’ve not had before as well as our old favourites. I recommend the cookbook as well and the great thing is as well as the amazing recipes, if you have a favourite recipe of your own, you can look at Mr Ds recipes and consider how you need to adapt your own recipe to make it come out well in the thermal cooker. Mr D has done all the work for us in making recipes that work well so it’s worth using them (and they are tasty!) but it is possible to use them also to adapt your own as well. Also worth checking out his YouTube videos (scroll down his channel Dave Knowles Film Maker) and a few historic Facebook lives.

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