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      Lesson details

      Learning outcome

      I can use food skills to make leek and potato soup.

      Key learning points

      1. Leeks are the national emblem of Wales, and are in season from September to March. The soup is called Cawl Cennin.
      2. A recipe gives instructions of how to make a dish. It usually lists title, ingredients, equipment and method.
      3. A blender purees the pieces of potato and leek into a smooth soup. Care must be taken as the blades are sharp.
      4. The potatoes and leeks cook in the soup through the transfer of heat from the liquid, known as convection.
      5. The food skills used to make a leek and potato soup are measuring, peeling, slicing, using the hob and blending.

      Keywords

      • Recipe - a set of instructions for making a dish

      • Blender - an electrical piece of equipment that purees food

      • Heat transfer - the exchange of heat between two objects

      • Conduction - heat transferred via physical contact

      • Convection - heat transferred via a liquid or air

      Common misconception

      Vegetables and fruit do not need to be washed before use as they look clean or have been taken from a packet.

      Vegetables and fruit should be washed thoroughly before use. This removes dirt (soil/grit), insects and bacteria which could cause food poisoning.

      Teacher tip

      If you do not have enough blenders, or you feel that your pupils are not ready to use them, omit this step and make a chunky soup. Pupils could crush the potatoes with a fork or masher to make it a little smoother.

      Equipment

      For ingredients and equipment see the recipe in additional materials.

      Content guidance

      Risk assessment required - may contain allergens

      Risk assessment required - equipment

      Supervision

      Adult supervision required

      Licence

      This content is © Oak National Academy Limited (2026), licensed on Open Government Licence version 3.0
      except where otherwise stated. See Oak's terms & conditions
      (Collection 2).

      Lesson video

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      Prior knowledge starter quiz

      6 Questions

      Q1.
      True or false? Potatoes and carrots grow under the ground.

      Correct answer: True
      False

      Q2.
      What piece of equipment is being used here?

      An image in a quiz
      Frying pan
      Wok
      Correct answer: Saucepan

      Q3.
      Match the piece of equipment to its correct use.

      Correct Answer:vegetable knife,to cut or slice foods
      Correct Answer:vegetable peeler,to remove the skin of vegetables
      Correct Answer:measuring jug,to measure liquids
      Correct Answer:chopping board,to protect the work surface

      Q4.
      Which food skill is being demonstrated?

      An image in a quiz
      the bridge hold
      Correct answer: the claw grip
      the bridge grip
      the claw hold

      Q5.
      To measure small amounts of food, like dried herbs or spices, we use measuring ...

      Correct Answer: spoons, spoon, tea spoon

      Q6.
      Order the 'getting ready to cook' stages.

      1 - Remove coat, jumper and jewellery
      2 - Tie up long hair.
      3 - Wash and dry hands.
      4 - Put on a clean apron.

      6 Questions

      Q1.
      Which of the following will you always find on a recipe?

      nutrition information
      storage advice
      Correct answer: a title
      Correct answer: ingredient list
      Correct answer: the method

      Q2.
      What type of vegetable are leeks?

      An image in a quiz
      Stem
      Correct answer: Root
      Tuber

      Q3.
      Match these terms to the correct description.

      Correct Answer:heat transfer,the exchange of heat
      Correct Answer:conduction,heat transferred via physical contact (from the hob to the saucepan)
      Correct Answer:convection,heat transferred via a liquid or air (from the soup)

      Q4.
      Which of these is important when using a blender?

      Correct answer: Care must be taken as the blades are sharp. Do not touch the blades.
      Correct answer: Always switch the blender off at the wall.
      Wear oven gloves to place the soup in the blender as the soup will be hot.

      Q5.
      Place the soup recipe in the correct order.

      1 - Prepare the vegetables.
      2 - Fry the onions, leeks and potatoes.
      3 - Add the vegetable stock.
      4 - Simmer until the potatoes are soft.
      5 - Blend until smooth.

      Q6.
      Vegetables and fruit need to be before use so they are free from dirt, insects and bacteria.

      Correct Answer: washed, wash, washing

      To help you plan your 7 cooking and nutrition lesson on: Making leek and potato soup, download all teaching resources for free and adapt to suit your pupils' needs...