Recipe RatiosLearn the mathematics required to adapt recipes to serve a different number of people. 
Spicy Lemon Shrimp Soup (Serves 2)
80g Shrimp
60g mushrooms
1 stalk of lemon grass (sliced)
4 or 5 lime leaves
Bunch of Thai parsley
1 tbsp Tom Yam Chili paste (Can buy in a jar)
1½ tbsp Sugar
5 tbsp Milk
3 cups of pork stock
1 tbsp Lemon Juice
1½ tbsp Fish Sauce
2 tbsp Tamarind Juice
Bring the stock to the boil and add mushrooms, tamarind juice, fish sauce, sugar, lemon grass, the leaves, shrimp, chili paste
After about 3 minutes add the milk and turn off the heat
Add 1 tbsp lemon juice and serve straight away. There should be a unique sweet and spicy flavor. Garnish with Thai Parsley.
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Level 1  Cow Pad Gung (Fried Rice with Shrimp) Increase quantities by integer multiplication
Level 2  Massaman Gai (Chicken and Potato Curry) Increase quantities by multiplication
Level 3  Gai Gorae (Spicy Grilled Chicken) Decrease quantities
Level 4  Gwittyo Tom Yam Gung (Spicy Lemon Shrimp Soup with Noodles) Mixed questions
Level 5  Tom Yam Gung (Spicy Lemon Shrimp Soup) Hardfer mixed questions
Level 6  Geng Jute Jang Ngok (Glass Noodle Soup With Pork) Puzzling questions
More on this topic including lesson Starters, visual aids, investigations and selfmarking exercises.
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See the National Curriculum page for links to related online activities and resources.
The recipes used in this exercise are from Hot Sak's.
This video is from Jonathan Robinson
Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can doubleclick the 'Check' button to make it float at the bottom of your screen.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
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