Coca-Cola has invented a cool new way to enjoy a Coke and a smile this summer. Make that an icy cold way, actually.

After eight years of experimentation to get the sherbet-like, smooth-yet-crystalline texture just right, the beverage giant has just introduced a frozen Coke slushie in a pouch.

Alas, like so many intriguing new Coke products, Coca-Cola Frozen Lemon, which marks the company’s first foray into a pouched frozen soda product, is available only in Japan.

Yeah, cola fans in that market have all the fun.

The idea of a Coca-Cola packaged slushie was hatched back in August 2010, when surveyed consumers started clamoring for it. (Because … August?). According to a press release announcing the new product, translated from Japanese to English via Google Translate, it apparently took a while for Coke’s product development team to tinker with the formula and the packaging to get it right, but now the company says it has achieved “the ultimate taste … with a creamy and sharpened sherbet-like texture.”

The company is concurrently introducing two related frozen-soda-in-a-pouch products, as well: Fanta Frozen Orange and Fanta Frozen Grape.

Like Coca-Cola Frozen Lemon, the two Fanta pouched slushies are best enjoyed as follows: 1. Freeze them. 2. Let them sit around at room temperature for about 15 to 20 minutes. 3. Knead the pouch until the slushie is soft and malleable.

Thirsting to know if they’ll available here in the U.S.? Guess Coke will fill us in on a knead-to-know basis.