science

Khai khrop

Khai khrop is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Khai khrop rather than just read about it. In short: Khai khrop (Thai: ไข่ครอบ, pronounced [kʰàj kʰrɔ̂ːp]; also spelt as kai krob) or khai khu (ไข่คู่, pronounced [kʰàj kʰûː]) is a traditional food product from Songkhla in Southern Thailand. It is made by putting two duck egg yolks into an egg shell that was cut into half, preserved by soaking in brine.

Key takeaways

Khai khrop belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Khai khrop to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Khai khrop from memory before moving on to harder problems.

Reference excerpt

Khai khrop (Thai: ไข่ครอบ, pronounced [kʰàj kʰrɔ̂ːp]; also spelt as kai krob) or khai khu (ไข่คู่, pronounced [kʰàj kʰûː]) is a traditional food product from Songkhla in Southern Thailand. It is made by putting two duck egg yolks into an egg shell that was cut into half, preserved by soaking in brine. Khai khrop are steamed until hard before being eaten with rice or khao tom, or cooked with other foods.

History In the fishing villages of Songkhla Province, people make fishnets from unbleached cotton yarn. To prevent the threads in the net from getting frayed, and to help it sink in the water, the net is regularly treated with egg white from duck eggs. This creates leftover yolks, and so they are preserved as khai khrop. (ครูฑูรย์, 2012)

Methods

Traditional The traditional method for producing khai khrop is to cut the duck egg shell into half, add salt to the base of the shell, put two yolks in a shell and add salt again on top then dry it in sunlight for several days. If there is no time for sun-drying, the leftover egg shell is used as a cover to protect the yolks from insects and dirt. This process become the name of khai khrop. In Thai, khai means "egg" and khrop means "cover" (Remawadee, 2010). After the sun-drying process is complete, khai khrop is cooked by steaming, which makes it last for several days.

Uses Khai khrop can be eaten without further preparation, on their own or as a side dish. In southern Thailand, local people eat khai khrop as a side dish with rice and curry, or with khao tom. In some areas, khai khrops are sliced, mixed with chopped vegetables, chopped chilli, soy sauce, sugar and lime juice to become a spicy salad. Khai khrop are very similar to salted duck eggs but they have no egg white and the yolks are softer and less salty.

See also List of egg dishes List of steamed foods Salted duck egg Century egg

References

Citations Monkeytan. (2014, May 15). Mthai food. Retrieved January 11, 2017, from http://food.mthai.com: http://food.mthai.com/food-inbox/90416.html Remawadee. (2010, May 14). ไข่ครอบ หัวเขา สงขลา. Retrieved from remawadee.com: http://www.remawadee.com/songkra/Cover-Eggs.html "Steamed Duck Egg Yolk – Kai Krob". templeofthai.com. 15 January 2011. Retrieved 8 December 2017. ครูฑูรย์. (2012, January 10). ไข่คู่ - ไข่ครอบ. Retrieved January 22, 2017, from GotoKnow: https://www.gotoknow.org/posts/459943 รัตนะ, ส. (2013, November 9). 'ไข่ครอบหัวเขา'โอท็อปสงขลา. Retrieved January 22, 2017, from Komchadluek: https://web.archive.org/web/20181211115838/http://www.komchadluek.net/news/lifestyle/172312

Illustrations

Worked examples

Example 1 — a first encounter with Khai khrop

Start with the simplest possible case. Write down what Khai khrop claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Khai khrop before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Khai khrop ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Khai khrop

In research: Khai khrop appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Khai khrop in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Khai khrop is common in secondary-school and first-year university syllabi. It links to neighbouring topics Pickles, Thai egg dishes, so understanding it makes those chapters shorter.
In everyday life: Look for Khai khrop outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Khai khrop in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Khai khrop means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Khai khrop out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Khai khrop in simple terms?

Why does Khai khrop matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Khai khrop?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Khai khrop.