Wednesday, May 14, 2008

Slow Cooker v Pressure Cooker - Differences

Slow CookerThis is the third in a series of articles comparing pressure cookers and slow cookers. The first article compared the nutrient content of food cooked with these methods. The second article looked at similarities between them. This article is about the differences between them. But first, a quick quiz:
  • Are you the kind of person who makes a weekly menu and sticks to it?
  • Are you very well organised?
  • Are you a morning person?
  • Do you enjoy casseroles, pot roasts, soups, chilli and curries?
If you answered "yes" then you'll probably love a slow cooker. You can prepare a meal in the morning, leave it cooking all day, and come in from work to a delicious home-cooked meal with no more work to be done.
  • Are you rather disorganised?
  • Do you wish you could have more home-cooked food but you hate to spend hours in the kitchen after a long day at work?
  • Do you enjoy casseroles, pot roasts, soups, chilli and curries?
If you answered "yes" then you'll probably love a pressure cooker. You can fling some ingredients in it and put it on the hob, then enjoy tender meat and thoroughly-cooked vegetables in a fraction of the time. But as you probably spotted, you can cook similar sorts of foods in both of them.

The main difference between them is how they work. A slow cooker uses a low heat for a long time. The food never reaches boiling point, but over several hours this low heat is enough to cook vegetables and meats right through. The slow cooker plugs in to an electrical outlet - you don't need a stove. I wish I'd had one when I was a student in halls of residence. A slow cooker draws very little power because it doesn't boil the food, so it's cheaper than conventional cooking methods. Many types of slow cooker have a removable crock that can be used as a serving dish. The lid on a slow cooker just sits lightly on top of the crock, it isn't sealed.

A pressure cooker lid, by contrast, has a tight seal. The lid contains a valve with a weight on top, so as you heat it on the hob the pressure builds up inside until the pressure is great enough to push the weight up and release a little bit of steam with a loud hiss that scares some people. This makes the pressure drop inside so the weight falls and the pressure starts to build up again. (There's really no reason to be scared of pressure cookers. They make a loud hissing noise, but there's nothing that can hurt you. They're a damn sight safer than a stepladder.) Because it is operating at more than atmospheric pressure, the temperature inside the pressure cooker reaches more than 100°C. A pan of stew or soup on your hob, with or without a lid, will never get hotter than 100°C. At this pressure and temperature, the food cooks much quicker, using less electricity.

Because of this, I use my pressure cooker a lot for cooking dried beans and pulses. Beans take hours to cook on the hob, so the pressure cooker saves a lot of time and money. Some beans (particularly red kidney beans and soya beans) contain toxins that are destroyed by heat. The high temperatures in a pressure cooker are more than enough to destroy these toxins so this is a safe way to cook dried beans. But you should never put soya or kidney beans in a slow cooker without cooking them first to destroy the toxins. The Vegetarian Society recommends pre-boiling all varieties of dried beans before slow cooking. Tinned beans of course are perfectly safe.

This was the third in a series of articles about slow cookers and pressure cookers. The final article in the series will have some recipes for these methods of cooking. Please keep emailing me your favourite recipes for slow cookers and pressure cookers.

11 comments:

k425 said...

Every time I read about boiling pulses I recall an article in either Good Food or Vegetarian Good Food years ago, where they tested cooking times for pulses and what was best for getting rid of toxins etc.

The article was published in autumn. The work was done, in a small kitchen, at the height of a very hot summer...

I do actually use the article, but every time I have to search for it in amongst all the recipe cuttings.

blackberry44 said...

Mel, I'd just like to mention that a pressure cooker can be used in conjunction with other cooking methods to speed up the cooking of, for example, root vegetables.

I nearly always cook potatoes, carrots and parsnips in the pressure cooker, the potatoes at the bottom, in the water and the other vegetables in baskets on top. It cooks them really quickly and preserves the vitamins.

This way, you can have freshly cooked vegetables with your slow-cooked stew.

I know you're really only comparing slow and pressure cookers, but I'd like to point out that microwaves cook green vegetables extremely quickly without any detriment to the taste such as you get with microwaved potatoes.

So if you get up early enough to start off the stew, you can save time by preparing the vegetables when you get home and cooking them really quickly.

It's perfect for those bags of washed spinach, because you only have to make a hole in the bag and you can cook them without a container and the spinach doesn't go all mushy or get watery.

Mildew said...

Not wanting to be a boring old poo or anything, but how does the temperature go for the slow cooker? Meat needs to be cooked at a temp of at least 65C otherwise you could be putting yourself at risk from various food poisoning bacteria. Sorry! I was a chef and this kind of thing got pummelled into me.

I still want one though.

Melanie Rimmer said...

Mildew - The Wikipedia page about slow cookers says "A typical slow cooker operates at (more or less) 80°C (176°F) on low, 90°C (194°F) on high, and 1 hour at 90°C followed by 80°C on medium". Googling for "slow cooker temperature" I found several other pages that concur with those figures. But you're right to be alert about food poisoning. The leaflet that came with my slow cooker said it is importnt not to put frozen or partially frozen meat in the slow cooker for this reason - it would take too long to come to a safe temperature and bacteria would have time to muliply if you did.

neil said...

Remember that 65-70 is very very low for a normal cooker (just above tick-over for most I would think). And I'm sure the slow cooker designers are well aware of the need to get meat to a minimum temp.

liwo said...

成人電影,情色,本土自拍, 美女交友, 嘟嘟成人網, 成人貼圖, 成人電影, A片, 豆豆聊天室, 聊天室, UT聊天室, 尋夢園聊天室, 男同志聊天室, UT男同志聊天室, 聊天室尋夢園, 080聊天室, 080苗栗人聊天室, 6K聊天室, 女同志聊天室, 小高聊天室, 情色論壇, 色情網站, 成人網站, 成人論壇, 免費A片, 上班族聊天室, 成人聊天室, 成人小說, 微風成人區, 色美媚部落格, 成人文章, 成人圖片區, 免費成人影片, 成人論壇, 情色聊天室, 寄情築園小遊戲, AV女優,成人電影,情色,本土自拍, A片下載, 日本A片, 麗的色遊戲, 色色網, ,嘟嘟情人色網, 色情網站, 成人網站, 正妹牆, 正妹百人斬, aio,伊莉, 伊莉討論區, 成人遊戲, 成人影城,
ut聊天室, 免費A片, AV女優, 美女視訊, 情色交友, 免費AV, 色情網站, 辣妹視訊, 美女交友, 色情影片 成人影片, 成人網站, A片,H漫, 18成人, 成人圖片, 成人漫畫, 情色網, 日本A片, 愛情公寓, 情色, 舊情人, 情色貼圖, 情色文學, 情色交友, 色情聊天室, 色情小說, 一葉情貼圖片區, 情色小說, 色情, 色情遊戲, 情色視訊, 情色電影, aio交友愛情館, 色情a片, 一夜情, 辣妹視訊, 視訊聊天室, 免費視訊聊天, 免費視訊, 視訊, 視訊美女, 美女視訊, 視訊交友, 視訊聊天, 免費視訊聊天室, 情人視訊網影音視訊聊天室, 視訊交友90739, 成人影片, 成人交友, 本土自拍, 免費A片下載, 性愛,
成人交友, 嘟嘟成人網, 成人電影, 成人, 成人貼圖, 成人小說, 成人文章, 成人圖片區, 免費成人影片, 成人遊戲, 微風成人, 愛情公寓, 情色, 情色貼圖, 情色文學, 做愛, 色情聊天室, 色情小說, 一葉情貼圖片區, 情色小說, 色情, 寄情築園小遊戲, 色情遊戲情色視訊, 情色電影, aio交友愛情館, 言情小說, 愛情小說, 色情A片, 情色論壇, 色情影片, 視訊聊天室, 免費視訊聊天, 免費視訊, 視訊美女, 視訊交友, 視訊聊天, 免費視訊聊天室, a片下載, aV, av片, A漫, av dvd, av成人網, 聊天室, 成人論壇, 本土自拍, 自拍, A片,成人電影,情色,本土自拍,

uhfdf said...

情色電影, aio交友愛情館, 言情小說, 愛情小說, 色情A片, 情色論壇, 色情影片, 視訊聊天室, 免費視訊聊天, 免費視訊, 視訊美女, 視訊交友, ut聊天室, 視訊聊天, 免費視訊聊天室, a片下載, av片, A漫, av dvd, av成人網, 聊天室, 成人論壇, 本土自拍, 自拍, A片, 愛情公寓, 情色, 舊情人, 情色貼圖, 情色文學, 情色交友, 色情聊天室, 色情小說, 一葉情貼圖片區, 情色小說, 色情, 色情遊戲, 情色視訊, 情色電影, aio交友愛情館, 色情a片, 一夜情, 辣妹視訊, 視訊聊天室, 免費視訊聊天, 免費視訊, 視訊, 視訊美女, 美女視訊, 視訊交友, 視訊聊天, 免費視訊聊天室, 情人視訊網, 影音視訊聊天室, 視訊交友90739, 成人影片, 成人交友,

免費A片, 本土自拍, AV女優, 美女視訊, 情色交友, 免費AV, 色情網站, 辣妹視訊, 美女交友, 色情影片, 成人影片, 成人網站, A片,H漫, 18成人, 成人圖片, 成人漫畫, 情色網, 日本A片, 免費A片下載, 性愛, 成人交友, 嘟嘟成人網, 成人電影, 成人, 成人貼圖, 成人小說, 成人文章, 成人圖片區, 免費成人影片, 成人遊戲, 微風成人, 愛情公寓, 情色, 情色貼圖, 情色文學, 做愛, 色情聊天室, 色情小說, 一葉情貼圖片區, 情色小說, 色情, 寄情築園小遊戲, 色情遊戲, 情色視訊,

fgeegf said...

aaaa片, 免費聊天, 咆哮小老鼠影片分享區, 金瓶梅影片, av女優王國, 78論壇, 女同聊天室, 熟女貼圖, 1069壞朋友論壇gay, 淫蕩少女總部, 日本情色派, 平水相逢, 黑澀會美眉無名, 網路小說免費看, 999東洋成人, 免費視訊聊天, 情色電影分享區, 9k躺伯虎聊天室, 傑克論壇, 日本女星杉本彩寫真, 自拍電影免費下載, a片論壇, 情色短片試看, 素人自拍寫真,

做愛的漫畫圖片, 情色電影分享區, 做愛ㄉ影片, 丁字褲美女寫真, 色美眉, 自拍俱樂部首頁, 日本偷自拍圖片, 色情做愛影片, 情色貼圖區, 八國聯軍情色網, 免費線上a片, 淫蕩女孩自拍, 美國a片, 都都成人站, 色情自拍, 本土自拍照片, 熊貓貼圖區, 色情影片, 5278影片網, 脫星寫真圖片, 粉喵聊天室, 金瓶梅18, sex888影片分享區, 1007視訊, 雙贏論壇, 爆爆爽a片免費看, 天堂私服論壇, 情色電影下載, 成人短片, 麗的線上情色小遊戲, 情色動畫免費下載, 日本女優, 小說論壇, 777成人區, showlive影音聊天網, 聊天室尋夢園, 義大利女星寫真集, 韓國a片, 熟女人妻援交, 0204成人, 性感內衣模特兒, 影片, 情色卡通, 85cc免費影城85cc, 本土自拍照片, 成人漫畫區, 18禁, 情人節阿性,

免費成人影音, 彩虹自拍, 小魔女貼影片, 自拍裸體寫真, 禿頭俱樂部, 環球av影音城, 學生色情聊天室, 視訊美女, 辣妹情色圖, 性感卡通美女圖片, 影音, 情色照片 做愛, hilive tv , 忘年之交聊天室, 制服美女, 性感辣妹, ut 女同聊天室, 淫蕩自拍, 處女貼圖貼片區, 聊天ukiss tw, 亞亞成人館, 777成人, 秋瓷炫裸體寫真, 淫蕩天使貼圖, 十八禁成人影音, 禁地論壇, 洪爺淫蕩自拍, 秘書自拍圖片,

Anonymous said...

免費a片 a片 免費av 色情影片 情色 情色網 色情網站 色情 成人網成人圖片成人影片 18成人 av av女優avav女優情慾 走光 做愛 sex H漫 情色 情趣用品 情色 a片 a片 成人網站 成人影片 情趣用品 情趣用品アダルトアダルト アダルトサイト アダルトサイト 情趣用品
補正下着

Anonymous said...

放鬆心情自由自在的來一趟花蓮旅遊,可以感受花蓮民宿各種不同的風味,所以來花蓮一定要住花蓮民宿哦!因為可從花蓮民宿主人那裡分享到不一樣的花蓮旅遊的經驗以及品嚐花蓮美食道地的花蓮小吃,所以來花蓮旅遊管家不一定就要享受花蓮高級餐廳的花蓮美食也可以多試試道地古早味的花蓮美味哦!來花蓮民宿可以放鬆整個心情,來花蓮電腦住宿也可以放空自已,來花蓮也可以了解在地的文化哦!住民宿其實是很輕鬆的,住花蓮民宿其實是很容易,還有就是現在是高油價的時代,還自行開車來花蓮嗎?來花蓮租車會比較輕鬆哦!來花蓮房屋租車會比較省錢哦!或是可以請花蓮計程車帶您包車旅遊喔!!歡迎來住住美麗的花蓮民宿囉!!一定要讓您來花蓮旅遊並且讓您愛上花蓮民宿,還有團購美食好吃的蜂蜜蛋糕、養顏美容的花蓮民宿以及花蓮美食喔!!文旦|鶴岡文旦|柚子|花蓮電腦|花蓮剝皮辣椒

Anonymous said...

花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮|花蓮旅遊|文旦|剝皮辣椒|花蓮民宿

Share it