First, let’s back up. All the varieties described below are technically sweet potatoes, though they’re often called yams. Some are the bright orange-fleshed ones we’re used to, but others are pale yellow like the one above. As far as I can tell, it doesn’t hold true for yams, which are an entirely different species altogether. Everything I’ve read has been “sweet potato, sweet potato, sweet potato.” “Toxicants Occuring Naturally in Foods” mentions that yams don’t make these chemicals when moldy, but they didn’t include a citation for it. Using the microwave to cook sweet potatoes. Incidentally, yams and sweet potatoes are different. When I cut them open, I noticed there were white spots and holes. Cut into my orange sweet potato, I always get the same ones, always orange inside, but this one has loads of white in it. Holes and white spots in sweet potatoes Forum-> Household Management-> Kosher Kitchen: View latest: 24h 48h 72h. Types of Sweet Potatoes. Francis said sweet potatoes stored in cool, constant conditions have a shelf life of up to several months. (Emphasis mine.) There's no blending, just spots and patches of white everywhere. Identify/Knowing/Controlling Registration Log in. There are a ton of different kinds of sweet potatoes from Beauregard to Regal, but it’s hard to find most of them in the store. Simply put, there is more than one type of sweet potato. The flesh is part orange and part white, marbled. maze Sun, Sep 25 2011, 10:21 am. For more information on cultivating and preserving sweet potatoes or other tubers, contact your local county extension agent or visit www.uaex.edu. Note: I am inferring the item in question really is a sweet potato, marketed as a yam. The skin can be white, yellow, red, purple or brown, and the flesh can be white, yellow, orange or purple. Okay, I get it: Baking a sweet potato in the oven can take 45 minutes to an hour, or a mere 5 minutes in the microwave. I’ve sliced into sweet potatoes plenty of times, but this afternoon was my the first time I really noticed droplets of white ooze developing in a ring along the inside edge of a cut yam. Crops; Potato; Fact sheets; Non-parasitic diseases; Internal physiological disorders Well, the answer is really not that exciting. Sweet potatoes come in many different colors. Should I throw them out or is it ok to use it? However, in the United States, there are two main varieties of sweet potato: One has a golden skin with creamy white flesh and a crumbly texture. Question: Recently, perfectly good-looking sweet potatoes when baked and opened seemed to have green areas and in one instance an entirely light green color. Fortunately, as many a farm denizen probably already knows, the white liquid is perfectly safe and harmless- and it won’t affect the taste or cooking properties of your sweet potatoes. In general, you should be suspicious of any unexpected appearance in your produce. 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