Thanks to Caroline S.Tangerines, clementines, and mandarines are similar. “Later in the season it gets fluffier than at other times of the year.” “They’ll actually even vary depending on how mature the fruit is,” he said. Steve Futch, an extension agent at the University of Florida’s Citrus Research and Education Center, notes that different varieties of citrus simply have different albedo characteristics, which means that sometimes you get a clementine with a fluffy albedo interior, and other times the pith is more compact. There’s an open space in the very center and sometimes you’ll find a particularly fluffy bit of albedo taking up residence. While some citrus fruits have a tight connection down their central cores, mandarins (a category that includes this clementine) don’t. It cushions the citrus from falls and other fruity collisions. This makes sense when you consider that albedo is sort of like the fruit’s natural answer to packing foam. Albedo-you see it inside the peel and also in the “core” of the fruit, and in the threads you probably pick off your orange segments-is a loose network of cells containing relatively large air pockets. Here’s why.įor the paranoid among us, the delicate, fluffy white fibers at the center of some clementines can look hauntingly like the delicate fuzz we associate with mold.įortunately, however, this is not mold, but rather “albedo,” or, the white pith inside all citrus fruits.

It’s safe to eat citrus with white fluff like this inside. It’s called albedo.Įat or toss? The citrus is perfectly fine, so eat! Some people don’t eat the albedo itself because it can be bitter, but that’s a question of taste and not safety.

What it is: Basically just an airier version of the white pith that lines the inside of the peel and the space between segments. What you see: A delicate white fluff in the center of your clementine (or tangerine, or other type of mandarin)

Clementine v tangerine v mandarin