August is peak sweet corn. The milk punch from July took corn in one direction: warm, cooked, washed soft. This is the other one. Kernels charred hard, juiced, and folded into agave syrup, 10 ml of Nixta underneath, the tequila washed with brown butter, and a black and white salt rim to frame it. Shaken and served over one clear cube.
The drink
The structure is a standard margarita: spirit, lime, sweetener. Every component is doing extra work. The sweetener is a charred corn agave: charred kernels juiced and mixed one to one with agave syrup, so the agave backbone of the drink stays intact and the corn rides on top of it. Ten milliliters of Nixta, the Mexican corn liqueur, sits underneath and ties the tequila and the corn together. The rim is a mix of black lava salt and flaky white sea salt: the black brings a mineral, faintly sulfurous edge that reads as char, and it looks the part against the golden drink. The brown butter wash rounds the tequila out and gives the drink a fuller texture without making it heavy.
Fat washing is the one technique here we have not put on the blog before. It is the same logic as the milk wash: put a fat in contact with a spirit, let it trade flavor, then pull the fat back out with cold. Butter is the easiest fat to start a program on because the freeze separation is clean and the flavor is familiar to every guest.
Finished-drink targets
ABV: ~17%
Sugar: ~95 g/L
Acid: ~10 g/L
Texture: silky from the butter wash, no visible oil
Serve: ~150 ml, double rocks glass, one large clear cube, half rim of black and white salt
Prep 1: brown butter tequila
Use a blanco with some body. The wash softens pepper and adds a nutty, toffee edge that meets the charred corn halfway.
Spec, per 750 ml blanco tequila (40%)
125 g unsalted butter
1. Brown the butter in a light-colored pan over medium-low
heat until the milk solids are hazelnut and it smells like
toasted nuts, 10 to 12 minutes. You will have ~100 g of
brown butter after the water cooks off.
2. Let it cool 2 to 3 minutes off the heat, then pour it
warm, solids and all, into the tequila in a wide container.
Stir 30 seconds.
3. Rest 2 hours at room temperature, stirring every
30 minutes.
4. Freeze at −18°C overnight. The fat sets as a
solid cap.
5. Lift or punch through the cap and strain the spirit
through a coffee filter while still cold.
Yield ~700 ml at ~39%, 11 serves. Holds 8 weeks cool and
dark; if haze appears, re-filter cold. Log: butter in and
out, yield, date.
Prep 2: charred corn agave
Char the kernels on the cob so they pick up real color, not just grill marks, then juice them. No added water: the juice goes one to one into agave syrup, cold, same logic as the cordials in the highball and gimlet notes: filter first, mix cold, keep it bright.
Spec, per 1,000 g charred corn juice
10 to 12 ears sweet corn (~1.8 kg kernels after charring)
1,000 g agave syrup
3 g fine salt
1. Char the shucked cobs on a dry cast iron pan or plancha
over high heat, turning, until about a third of the surface
is blackened, 6 to 8 minutes. No oil.
2. Cool 5 minutes, cut the kernels off.
3. Run the kernels through the juicer.
4. Settle the juice 30 minutes in the fridge, then pass it
through a coffee filter. Starch stays behind; that is what
keeps the shaken drink from foaming dull.
5. Whisk the juice into the agave syrup with the salt,
cold, until homogenous. Do not heat.
Yield ~1.7 L, about 68 serves. Two weeks refrigerated;
freeze what week one does not use.
Prep 3: black and white salt
Spec
20 g black lava salt
40 g flaky white sea salt
1. Mix 1 part black lava salt to 2 parts flaky white salt
by weight.
2. Keep the grains coarse; do not grind. The contrast is
the point.
Holds indefinitely airtight. The black salt reads as
mineral and lightly smoky against the sweet corn, and the
mixed rim looks deliberate instead of decorative.
The build
Spec, per serve
60 ml brown butter tequila
10 ml Nixta corn liqueur
25 ml fresh lime juice
25 ml charred corn agave
1. Half-rim a double rocks glass: lime wedge on the
outside edge, roll in the black and white salt.
2. Shake all ingredients with ice, ~12 seconds.
3. Strain over one large clear cube.
4. No further garnish. The rim is the garnish.
Service batch, per liter
855 ml brown butter tequila
145 ml Nixta
1. Combine and bottle. Spirit only, so it lives on the
rail like any other bottle. 70 ml per serve.
2. At service: 70 ml batch + 25 ml fresh lime + 25 ml
charred corn agave, shake, strain over the cube.
~14 serves per liter. The batch holds as long as the
butter wash does, 8 weeks. The corn agave stays
refrigerated like any house syrup and the lime is always
fresh at the shake; neither goes in the batch.
The operator math
Ingredient cost per serve, using a $22 well blanco:
- Brown butter tequila, 60 ml: ~$2.00 ($22 tequila plus ~$1.50 of butter yields 700 ml)
- Nixta, 10 ml: ~$0.45 (a $35 bottle is 75 pours)
- Lime, 25 ml: ~$0.25
- Charred corn agave, 25 ml: ~$0.20 (a dozen August ears plus 1 kg agave syrup makes 68 serves)
- Black and white salt rim: ~$0.05
Call it $2.95 a serve. At $18 on the menu that is a 16% pour cost, and the drink lists as the house margarita variant all of August. The corn agave with lime and soda over ice also makes an NA corn limeade that costs ~$0.50 to put in the glass.
The pattern is the same as the tepache and plum notes: cheap seasonal produce and all the skill front-loaded into prep any bartender on the roster can execute. Service is rim, shake, pour.
Builds like this, with the batch sheets and prep SOPs behind them, are what a menu refresh engagement produces. If your August list is still pouring the winter menu, fifteen minutes will tell you what it needs.