How to use a jigger

The hardest part of measuring by eye is deciding where the surface is relative to a line. Liquid has a meniscus, your eye is above the level of the liquid, and small parallax errors turn into real volume errors.

A brim-full cone removes all of that. The rim is a physical edge, the surface either meets it or it does not, and you do not need to be at eye level to tell. That is why a jigger's headline volumes are more reliable than anything you measure against an interior line.

When you do need a fraction, bring your eye down to the level of the liquid rather than looking down into the cone. Looking down compresses the apparent distance between lines and makes over-pouring almost invisible.

A measured ounce is only an ounce if all of it reaches the tin. Two things cost you volume and both are fixable.

The first is clinging. Any liquid that is thicker than a spirit - a syrup, a cream liqueur, a thick juice - leaves a film on the cone. For those, pour slowly and give the jigger a moment to drain, or rinse the jigger into the tin with a splash of the next clear ingredient.

The second is hesitation. A stop-start pour leaves liquid running back down the outside, which is both lost volume and a wet bottle. One continuous motion into the tin, and no recovery attempt if it starts running - let it go and be slightly under rather than chasing it.

Rinsing between every ingredient is the reason people give up on jiggering. It is also almost always avoidable with an order of operations.

1. Syrups and sugars first. They are the stickiest, and the next ingredient rinses the cone for you.
2. Then citrus. Acidic and clear, and it cuts the syrup film.
3. Then clear spirits. Gin, vodka, blanco tequila.
4. Then dark spirits and liqueurs. Whiskey, rum, amaro - anything that will tint the next measure.
5. Bitters last, and not in the jigger. Dashes go straight in.

Done in that order you can build most drinks with one rinse or none. Owning a second jigger removes even that, and jiggers are cheap enough that this is a reasonable thing to do - see best Japanese jiggers.

A small habit that makes jiggering feel fast rather than fussy: give the jigger a home on the counter and always put it back there. Hunting for a wet cone among bottles is most of what makes measuring feel slow, and it is entirely self-inflicted.

Put it on a bar mat beside the tin, narrow end down, on the side of your dominant hand. Everything you pour comes from the bottle in one hand into the jigger held in the other, and then into the tin - so the jigger only touches the counter between ingredients, and it should touch the same spot every time.

The related habit is emptying it completely. A jigger with a few drops of the last ingredient in it is a jigger that has quietly contaminated the next measure, and with syrups that residue is more than a few drops. One motion in, one motion out, and set it down empty.

If you build drinks on an open cart rather than a kitchen counter, this matters more rather than less - there is less surface and more to knock over. How to stock a bar cart covers keeping a clear working area, which is the same idea at a larger scale.

Sometimes the honest answer is that the jigger is wrong rather than the pour. An unmarked stamped cone gives you two volumes and nothing in between, and if every recipe you make needs three quarters of an ounce, no technique rescues it.

A wide shallow cone is also genuinely harder to read at fractions, for geometric reasons covered in Japanese vs American jigger. If you are fighting the tool at every fractional measure, a narrower cone with lines is the fix.

But if your drinks are inconsistent and you are not jiggering at all, no jigger purchase is needed to find that out - measure the next six drinks with a marked measuring spoon and see whether they improve. If they do, buy the jigger.