Smirnoff No. 21 comes in three sizes: 750ml at $16.99, 1L at $19.99, and the 1.75L handle at $22.99. Per drink the handle is roughly forty percent cheaper than the small bottle. Plus No. 57 at 100 proof, the two green apple bottles, the gluten free question, and how many drinks are in each size.

A litre of Ketel One is $39.99 - exactly what a litre of Grey Goose costs on the same shelf. The Dutch pot-still wheat vodka the Nolet family has made since 1691, why it is the bartender's martini default, where forty dollars sits on the vodka ladder, and the one thing to know before Pesach.

Three Beluga bottles on our shelf at $32.99, $54.99 and $119.99 - same Siberian distillery, same malted barley, same 40 percent. What changes is resting time and one unusual ingredient. Why Noble is the one to buy, what the maple in Allure actually does, and what the $119.99 wax-sealed Gold Line is really for.

Grey Goose comes in 750ml, 1 litre and 1.75 litre, and the prices are not proportional. Worked out per ounce, the litre and the handle cost exactly the same and the 750 costs 17 percent more. Every size, every price, how many drinks are in each, and what the same money buys elsewhere.

Five bottles on our shelf sound like "elite" and run from $29.99 to $129.99. Stolichnaya is the base vodka, Stoli is the same brand's short name, and Elit is its top shelf - while Russian Elite and Royal Elite are different companies entirely. What each one is, what the price buys, and which to pick.

Potato vodka is distilled from potatoes instead of grain, which makes it rounder and fuller in the mouth, more expensive to make, and the traditional bottle for Pesach. What the difference actually tastes like, why seven pounds of potatoes go into one bottle, and the two we carry at $32.99 and $17.99.

Smirnoff Green Apple is $14.99 for the 750ml and $19.99 for the litre, and it tastes like an actual Granny Smith - tart first, sweet second, which is the opposite order to most flavoured vodka. The two bottles on our shelf, the drinks worth making, and who should buy something else.

A handle is 1.75 litres, 59 ounces and about 39 shots. Here is every vodka bottle size in plain numbers, how many drinks each one pours, and the brands where the big bottle saves you 42 percent - and the ones where it saves you almost nothing.

The most-visited bottle on our site, explained. What is in Russian Standard, what separates the red label from Platinum and Gold, which one to buy for mixing and which for drinking neat, and where it stands on kosher.