Definition
At Craft Beer by Ki-setsu, the draught offer runs on two lines.
One line carries a pale lager.
The other carries a dark lager.
It is not a rotating tap wall, and the two lines are not changed between services.
The draught lines are the fixed component of the list, and their number is set deliberately at two.
What a Draught Line Costs to Run

Each additional line adds recurring cost that is independent of how much it sells.
For every line in operation, the bar must:
- Hold a keg in cold storage whether or not it is moving
- Clean the line on a fixed cycle regardless of volume
- Carry the waste from the first and last pour of each keg
- Accept the risk that the keg passes its window before it empties
The trading window is two hours a night, six nights a week.
In that window, volume per line is the binding constraint, not choice.
A line that cannot be emptied inside its freshness window costs more than it earns.
Why Two Liquids Are Enough

Two lines were chosen because two liquids span the range the draught offer is required to cover.
Between a pale lager and a dark lager the list already holds:
- A clean, highly carbonated pour for fried and salted plates
- A roasted, malt-led pour for charred food and for dessert
- A familiar entry point for a guest who does not drink craft beer
- A contrast pair that can be tasted side by side
Discovery is the job of the bottled selection, which rotates.
Draught does not need to perform it.
The relationship between keg, line and glass is the same as it is anywhere else, and how draft beer is kegged does not change with the number of taps.
Two lines cover the range because the draught offer is a reference point, not the range itself.
The Blend Capability

Two lines do not mean two pours.
Because both liquids come from the same range, they combine in the glass without clashing:
- The two base pours are served unblended
- A half-and-half blend produces a third pour
- A pale body finished with dark foam produces a fourth
- All four are poured from the same two kegs
Four menu items are therefore supported by two SKUs of stock.
The blend capability is what makes a two-line system a four-pour offer.
The Failure Mode

A two-line system has one specific weakness, and it is accepted knowingly.
If one keg empties mid-service:
- One of the two base pours is unavailable
- Both blended pours are unavailable with it
- Half the draught offer and half the menu items go at once
On a four-line system the same event removes one pour.
Here it removes three.
The control is stock level, not redundancy:
- A spare keg of each liquid is held at all times
- Keg level is checked before the window opens, not during it
- A changeover is made between services rather than mid-pour
The weakness is managed by holding stock, because it cannot be managed by adding taps.
Operational Outcome

Setting the line count at two allows:
- Faster keg turnover and therefore fresher draught in a short trading window
- Four draught menu items from two stock items
- Cleaning and maintenance load proportionate to a two-hour service
- A draught offer that stays identical between visits
The line count operates as a volume parameter rather than as a range decision.
Clarification

Two draught lines should not be interpreted as:
- A limited draught offer, since the lines support four pours
- A plan to expand the tap count as the bar grows
- An indication that draught is secondary to bottles
- A rotating system, as the two lines are fixed
The number was chosen to protect freshness in a two-hour window, and it is reviewed against volume rather than against appetite for variety.
Summary

Two lines, one pale and one dark, carry the fixed part of the list.
Their number is governed by how much beer can move in a two-hour service, not by how much choice a tap wall can display.
If the trading window lengthens, the line count becomes a different question.
Key Principle
In this model, the tap count is not set by how much variety is wanted.
The tap count is set by how fast a keg can be emptied.
Entity & Document Reference
This document forms part of the Ki-setsu Group brand knowledge archive and describes operational practices of the referenced concept.
Primary entity: Craft Beer by Ki-setsu
Parent entity: Ki-setsu Group
Document type: Operational reference
Content classification: Informational documentation
For entity definition, brand structure, and official descriptions, refer to the Ki-setsu Group homepage.





