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Quail Duck Hen Ostrich Goose Name that egg… To get you thinking..…

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Presentation on theme: "Quail Duck Hen Ostrich Goose Name that egg… To get you thinking..…"— Presentation transcript:

1 Quail Duck Hen Ostrich Goose Name that egg… To get you thinking..…
Buying eggs: Most eggs in shops are hens eggs. There are four main choices of egg production: battery farming (intensive farming with hens kept in cages), deep litter (hens live in an enclosed space as they soil their litter more is spread on top), barn (uncaged hens are kept indoors) and free range (hens can roam outside for at least part of the day) To get you thinking..… Quail Duck Hen Ostrich Goose

2 Egg Storage (Foodsafety.gov.uk)
Most eggs recipes require eggs to be at room temperature before using. Eggs in shells are fine at room temperature for a few days. Egg Product Refrigerator Freezer Raw eggs in shell 3 to 5 weeks Do not freeze. Instead, beat yolks and whites together; then freeze. Raw egg whites 2 to 4 days 12 months Raw egg yolks Yolks do not freeze well

3 Functional properties of eggs
The protein in an egg means that it is a versatile ingredient to cook with - it has many uses: Foaming - egg white can increase in volume by as much as 8 times when beaten - air bubbles are trapped by the protein Binding - egg protein can hold together a combination of ingredients. When heated the protein coagulates so that the product is unbroken. For example: cakes, fishcakes, burgers Thickening - liquids such as milk can be heated with beaten eggs. Once the protein coagulates, the mixture thickens. For example custard or hollandaise sauce. This mixture can set when cooled. For example crème caramel or quiche

4 Functional properties of eggs
4. Coating - When used in an ‘egg wash’ the egg lets breadcrumbs stick to a product. The protein coagulates when cooked and acts as a barrier to the product so that it stays moist and not overcooked Glazing - a shiny brown finish can be achieved on bread, pastry or biscuits if beaten egg is brushed on before cooking. It coagulates during cooking. Emulsifying - egg yolk is a natural emulsifier - it stops water and fat separating. When an egg yolk is combined with oil and vinegar it makes a stable mixture: mayonnaise As a main protein source - omelette,or egg and chips

5 The nutritional value of an egg Eggs
Eggs are: 10% shell 60% white 30% yolk 10% shell 10% protein They are good sources of protein, calcium, iron and B vitamins 60% white 90% water Two eggs provide: 20% of your daily protein needs 8% of your daily iron needs 8% of your daily calcium needs 16% protein 30% yolk 32% fat 50% water Two eggs also provide 15% of the daily fat you should eat This fat is a saturated fat - an animal fat

6 Things you need to know about eggs:
Eggs change as they age! Egg shells are porous - they let in air and odours (smells) As they age: The air space gets bigger The egg white becomes thinner and it is easier to whisk The yolk increase in size and the skin surrounding it becomes weaker (more likely to break into the white) The pH rises and it takes longer to foam Also: Egg yolk protein coagulates at a higher temperature than egg white protein


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