White potatoes will be considered waxy. These are the one at the grocery store that are usually medium sized and very light colored and very thin skinned.
Yukon Gold potatoes are a popular "waxy" potato.
Yes, Yukon Gold potatoes are waxy. Their texture is more waxy than the Yellow Finn potatoes, though more creamy and less waxy than the red potato.
Yes, the skin of a potato does reflect light. The skin of a potato contains a waxy cuticle that helps protect the potato from water loss and pathogens. This cuticle also reflects light, giving the potato its characteristic shine.
Yukon Gold, Fingerling, and Red Bliss potatoes are considered waxy potatoes. They have a smooth, creamy texture and hold their shape well when cooked, making them ideal for dishes like potato salad and roasted potatoes.
Non-waxy starches are starches that have a high amylose content compared to amylopectin. They have a lower gelatinization temperature and retrogradation tendency compared to waxy starches, making them suitable for certain food applications where a lower gel texture is desired. Examples include maize, rice, and potato starches.
A boiling potato is a type of potato that is best suited for boiling and cooking in soups, stews, and salads. It has a waxy texture and holds its shape well when cooked. This is different from other types of potatoes, like russet potatoes, which have a higher starch content and are better for baking or mashing.
Potato's come in two general varieties, waxy and starchy. The kind you want are the waxy variety, which hold their shape well when cooked in a liquid. The most common that people are familiar with are the red skinned, and the white skinned round potato's. If you are not sure about a particular potato, feel the skin. If it is drier, with a papery texture, it is probably a starchy potato and it will fall apart in a chowder. If the skin feels waxy, that's your best bet. Here's probably more information then you'd care for ;) http://www.foodsubs.com/Potatoes.html
Pregelatinized starch is a processed carbohydrate, used as a texturizer and/or binder. It is typically derived from corn, waxy corn, potato, or tapioca. It has nothing to do with gelatin. It is safe for vegetarians and vegans.
If I understand your question correctly, you are asking what the difference is between a PEI potato and a Yukon Gold potato. A PEI (Prince Edward Island) potato refers not to a potato varietal, but to the place where it is grown. The place where a vegetable is grown, the climactic conditions, the minerals in the soil, call all impact the ultimate taste of a crop. Hatch chilis are famous, and are rumored to be the best in the world, thanks to their unique growing conditions. Yukon Gold potatoes, at least in the current usage, don't refer so much to potatoes which are grown in the Yukon, but rather to a potato varietal. Yukon Golds are a waxy potato, they have a yellow skin and a little bit of a buttery taste, and they are far less starchy than a russet potato.
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Russet (starchy) This is the potato most people have fixed in their minds as the classic potato. They are ideal baking potatoes and are also good fried and mashed.Jewel Yam (starchy) Actually a sweet potato, not a true jam, this is the most commonly found market sweet potato. Great baked or roasted.Japanese Sweet Potato (starchy) This variety has a pink to purple skin with white flesh. Its flavor is sweet and nutty. They can be grilled, steamed or baked.Hannah Sweet Potato (starchy) Very much like a Jewel potato, but with lighter skin and flesh.Rose Finn Apple(waxy) This is an heirloom fingerling with a pink, often knobby skin with golden buttery yellow flesh. It has an earthy flavor and is great boiled, grilled, sauteed, deep fried, and served in salads.Russian Banana (waxy) This potato has a pale yellow skin with rich yellow flesh and a firm texture. It is good grilled, sautéed, fried, roasted whole or steamed for potato salads.Red Thumb (waxy) Fingerling with a bright red skin and pink flesh. Best boiled or roasted. A favorite among chefs.French Fingerling (waxy) Pink skins and yellow flesh. This heirloom fingerling has smooth skin and yellow flesh. There is usually a little pinkish ring right under the skin. It is a great potato for roasting.LaRette (waxy) These are little fingerling-shaped potatoes with a silky texture and a nutty flavor. Best roasted or boiled whole. They were discovered in the Swiss Alps by French Farmer named Jean Pierre Clot.Austrian Crescent (waxy) This is an heirloom variety with yellowish, tan smooth skin and very light yellow flesh. It is best in potato salads, but also great boiled, steamed and roasted.Red Gold (all-purpose) These are medium sized tan and red skinned potatoes with golden flesh. The texture is smooth and moist and the flavor is sweet and nutty. They are best baked, boiled, roasted or mashed gently.Purple Majesty (all-purpose) Oblong potatoes with very dark purple skin and purple moist, firm flesh. It keeps its color when cooked and is high in antioxidants. They are best roasted, baked, in soups and mixed into potato salads.Norland Red (all-purpose) Red skin and moist, creamy white flesh that holds up well when cooked. The farmer suggested serving them boiled, sliced and topped with butter and herbs. Can be boiled for potato salads as well as roasted, mashed, baked. Great boiled for potato salad, or whizzed into a soup.Yukon Gold (all-purpose) Golden inside, rough brown skin. Great mashed, boiled for salads, fried... you name it.Kennebec (all-purpose) This is a large potato with tan skin and white flesh. Baked, mashed, fried, or shredded into potato pancakes. It holds together well in boiling water as well.All Blue (all-purpose) This potato is truly blue both inside and out. It has a dry texture, but holds its shape well, so it's best baked and drizzled with butter or olive oil, or boiled/steamed for a potato salad. Steaming and baking will ensure it keeps its color best.
The epidermis is the waxy layers of some cells
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