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For some people, cheese is thought of as nothing more than the individually wrapped slices found in grocery stores. This type of processed cheese is usually half real cheese and half additives, like preservatives and other ingredients to maximize its gooey melting potential.

對于有些人而言，奶酪無非就是雜貨店里一片片單獨包裝的食品。這種加工型的奶酪通常半是奶酪，半是添加劑，比如保護劑以及其他盡可能讓奶酪柔軟易融的成分。

But real cheese connoisseurs know the good stuff is elsewhere in the store—blocks or wheels of fancy cheese aged to perfection. But why wheels? What’s so special about a circular block of cheddar?

但是，真正的奶酪鑒賞家知道，優質的奶酪卻在商店里的其他地方-成塊的或輪子狀的高級奶酪在歲月的沉淀下趨于完美。那么，為什么奶酪是輪子狀的？圓形的切達干酪到底有哪些特別之處？

Cheese is made when bacteria convert the lactose in milk to lactic acid. An enzyme, rennet, is used to curdle the milk; the leftover curds are processed to leave clumps of casein, which is then pressed into a mold.

奶酪的制作方法是細菌將牛奶中的乳糖轉化為乳酸。酶，即凝乳酶，用來使牛奶結塊；未用完的凝乳被加工成塊狀的酪蛋白，然后被壓入模具中。

The aging and ripening of cheese happens when cheese is left to absorb salt as well as molds like P. camemberti and P. candidum, which act to break down the milk proteins in the cheese and release flavor. Here's where shapes come in: If the cheese is in the shape of a wheel, the molds tend to distribute more evenly than if the cheese had edges for it to collect around. The mold moves over the surface and then downward.

當奶酪開始吸收鹽和卡芒貝爾青霉菌和白青霉等霉菌時，奶酪開始變老熟化。卡芒貝爾青霉菌和白青霉的作用是分解奶酪中的牛奶蛋白并釋放氣味。這里是奶酪形狀的由來：如果奶酪為車輪狀，則其中的霉菌會比有邊沿的奶酪分散地更加均勻。霉菌會移動到奶酪表面，然后向下移動 。

A cheese wheel also provides a better structure for a rind to form, which helps protect the cheese from insects, undesirable bacteria, or other contaminants. When molds (the stainless steel kind) are used, a round shape tends to hold up better to pressure than rectangles.

輪狀奶酪還為外殼的形成提供了一個更加良好的結構。外殼可以保護奶酪遠離昆蟲、討厭的細菌或其他污染物。當使用模具時（不銹鋼類型的），圓形比長方形更容易承受壓力。

Rind：某類奶酪或熏肉的外殼

Historically, European food markets used to prefer cheese wheels because it was far easier to roll a giant wheel than try to find transportation for it. Customers would then have the seller slice off the chunks they wanted.

在歷史上，歐洲的食品市場更青睞于輪狀奶酪，因為滾動一個巨大的輪子要比尋找適合它的交通工具更容易。客戶也會請求賣家按照自己的要求切取奶酪。

So why is cheese sold in block form at all? Retail needs. Block cheese is easier to transport, stock on shelves, and may be less prone to damage during transit.

那么，為什么奶酪要按塊狀出售呢？零售的需要。塊狀的奶酪更容易運輸，更易存放于貨架且在轉運時不容易損壞。

來源：Mental Floss

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