Cooking
is the process of preparing food by use of heat. Cooking techniques and ingredients vary widely across the world, reflecting unique environmental, economic, and cultural traditions. Cooks themselves also vary widely in skill and training.
Preparing food with heat or fire is an activity unique to humans, and some scientists believe the advent of cooking played an important role in human evolution.Most anthropologists believe that cooking fires first developed around 250,000 years ago. The development of agriculture, commerce and transportation between civilizations in different regions offered cooks many new ingredients. New inventions and technologies, such as pottery for holding and boiling water, expanded cooking techniques. Some modern cooks apply advanced scientific techniques to food preparation.
HISTORY OF COOKING
There is no clear evidence as to when cooking was invented. Primatologist Richard Wrangham suggested that cooking was invented as far back as 1.8 million to 2.3 million years ago. Other researchers believe that cooking was invented as late as 40,000 or 10,000 years ago. Evidence of fire is inconclusive, as wildfires started by lightning-strikes are still common in East Africa and other wild areas, and it is difficult to determine when fire was first used for cooking, as opposed to just being used for warmth or for keeping predators away. Most anthropologists believe that cooking fires began only about 250,000 years ago, when hearths started appearing.
Historical oven cooking depicted in a painting by Jean-François Millet
INGREDIENTS IN COOKING
Most ingredients in cooking are derived from living organisms. Vegetables, fruits, grains and nuts as well as herbs and spices come from plants, while meat, eggs, and dairy products come from animals. Mushrooms and the yeast used in baking are kinds of fungi. Cooks also use water and minerals such as salt. Cooks can also use wine or spirits.
Naturally occurring ingredients contain various amounts of molecules called proteins, carbohydrates and fats. They also contain water and minerals. Cooking involves a manipulation of the chemical properties of these molecules.
Main article: Protein
Edible animal material, egg whites, including muscle, offal, milk, eggs and contains substantial amounts of protein. Almost all vegetable matter (in particular legumes and seeds) also includes proteins, although generally in smaller amounts. These may also be a source of essential amino acids.When proteins are heated they become denatured and change texture. In many cases, this causes the structure of the material to become softer or more friable - meat becomes cooked. In some cases, proteins can form more rigid structures, such as the coagulation ofalbumen in egg whites. The formation of a relatively rigid but flexible matrix from egg white provides an important component of much cake cookery, and also underpins many desserts based on meringue.

Various raw
meats.
Red kidney beans contain protein.
Main article: Carbohydrates
Carbohydrates include the common sugar, sucrose (table sugar), a disaccharide, and such simple sugars as glucose (from the digestion of table sugar) and fructose (from fruit), and starches from sources such as cereal flour, rice, arrowroot, and potato. The interaction of heat and carbohydrate is complex.
Long-chain sugars such as starch tend to break down into simpler sugars when cooked, while simple sugars can form syrups. If sugars are heated so that all water of crystallisation is driven off, then caramelization starts, with the sugar undergoing thermal decomposition with the formation of carbon, and other breakdown products producing caramel. Similarly, the heating of sugars and proteins elicits the Maillard reaction, a basic flavor-enhancing technique.
An emulsion of starch with fat or water can, when gently heated, provide thickening to the dish being cooked. In European cooking, a mixture of butter and flour called a roux is used to thicken liquids to make stews or sauces. In Asian cooking, a similar effect is obtained from a mixture of rice or corn starch and water. These techniques rely on the properties of starches to create simpler mucilaginous saccharides during cooking, which causes the familiar thickening of sauces. This thickening will break down, however, under additional heat.
Grain products are often baked, and are
rich sources of complex and simple carbohydrates.
Main article: Fat
Types of fat include vegetable oils and animal products such asbutter and lard. Fats can reach temperatures higher than the boiling point of water, and are often used to conduct high heat to other ingredients, such as in frying or sautéing.
Tempura Deep fried shrimp is usually cooked
in vegetable oil and is often served with Soy Sauce.
Main article: Water
Cooking often involves water, which is frequently present in other liquids, both added in order to immerse the substances being cooked (typically water, stock or wine), and released from the foods themselves. Liquids are so important to cooking that the name of the cooking method used is often based on how the liquid is combined with the food, as in steaming, simmering, boiling, braising, and blanching. Heating liquid in an open container results in rapidly increased evaporation, which concentrates the remaining flavor and ingredients - this is a critical component of both stewing and sauce making.
Water is often used to cook foods such as noodles.
Vitamins and minerals
Main articles: Vitamins and Minerals
Vitamins are materials required for normal metabolism but which the body cannot manufacture itself and which must therefore come from soil. Vitamins come from a number of sources including fresh fruit and vegetables (Vitamin C), carrots, liver (Vitamin A), cereal bran, bread, liver e ( B vitamins), fish liver oil (Vitamin D) and fresh green vegetables (Vitamin K). Many minerals are also essential in small quantities including iron, calcium, magnesium and sulphur; and in very small quantities copper, zinc and selenium. The micronutrients, minerals, and vitamins in fruit and vegetables may be destroyed or eluted by cooking. Vitamin C is especially prone to oxidation during cooking and may be completely destroyed by protracted cooking.
methods of cooking
There are very many methods of cooking, most of which have been known since antiquity. These include baking, roasting, frying, grilling, barbecuing, smoking, boiling, steaming and braising. A more recent innovation is microwaving. Various methods use differing levels of heat and moisture and vary in cooking time. The method chosen greatly affects the end result. Some foods are more appropriate to some methods than others. Some major hot cooking techniques include:
Roasting
Roasting - Barbecuing- Grilling -Rotisserie- Searing
Baking
Baking - Baking Blind - Broiling- Flashbaking
Boiling
Boiling- Blanching - Braising - Coddling - Double steaming - Infusion- Poaching - Pressure cooking - Simmering- Steaming -Steeping - Stewing- Vacuum flask cooking
Frying
Frying - Deep frying- Hot salt frying - Hot sand frying - Pan frying- Pressure frying - Sautéing - Stir frying
Smoking
Smoking
Common foods and dishes
Rice is a staple food in Philippine cuisine
As with most Asian countries, the staple food in the Philippines is rice. It is most often steamed and served during meals. Leftover rice is often fried with garlic to make sinangag, which is usually served at breakfast together with a fried egg and cured meat or sausages. Rice is often enjoyed with the sauce or broth from the main dishes. In some regions, rice is mixed with salt, condensed milk, cocoa, or coffee. Rice flour is used in making sweets, cakes and other pastries. While rice is the main staple food, bread is also a common staple.
A variety of fruits and vegetables are often used in cooking. Bananas (the saba variety in particular), Calamondin (kalamansi), guava(bayabas), mangoes, papaya, and pineapples lend a distinctly tropical flair in many dishes, but mainstay green leafy vegetables like water spinach (kangkong), Chinese cabbage (petsay), Napa cabbage (petsay wombok), cabbage (repolyo) and other vegetables like eggplants (talong) and yard-long beans (sitaw) are just as commonly used. Coconuts are ubiquitous. Coconut meat is often used in desserts, coconut milk (kakang gata) in sauces, and coconut oil for frying. Abundant harvests of root crops like potatoes, carrots, taro (gabi), cassava (kamoteng kahoy), purple yam (ube), and sweet potato (kamote) make them readily available. The combination of tomatoes (kamatis), garlic (bawang), and onions (sibuyas) is found in many dishes.
Breakfast
A traditional Filipino breakfast:
pandesal (small bread rolls),
kesong puti (white cheese),
champorado (chocolate rice porridge),
sinangag (garlic fried rice),
and meat—such as tapa, longganisa, tocino, karne norte (corned beef), or fish such as
daing na bangus (salted and dried milkfish)—or itlog na pula (salted duck eggs).
Coffee is also commonly served particularly kapengbarako, a variety of coffee produced in the mountains of Batangas noted for having a strong flavor.