What it costs to start

The oil side is inventory

• Bulk oil, bought in a quantity that gets you a usable price and is more than you will bottle quickly.
• Bottles and closures, which here means glass and which means freight.
• Labels, which for an oil carry more regulated content than people expect.
• Acidification materials if you infuse, which is cheap and non-negotiable.

The trap is that oil has a clock on it from the day it is pressed, not from the day you buy it. Buying a year of stock to get a better price is buying oil that will be old when you bottle the last of it.

The vinegar side is time and space

Vessels, somewhere with a stable temperature, and months of waiting. The materials cost very little and the space cost is real and continuous, which is the opposite of a seasonal craft. A vinegar operation that cannot leave batches alone for months is not an operation yet.

The line nobody budgets

Testing. A vinegar needs its acid strength established rather than assumed, and an oil making a grade claim needs the analysis behind it. Neither is expensive per batch and both are easy to leave out of a plan, which is how a maker ends up with a label claim they cannot support.

Price it before you commit

Work out what a bottle must sell for to cover all of the above at the volume you will genuinely reach in year one. For oil that calculation is dominated by the cost of the oil itself, which is the thing you control least, and that is worth knowing before the first bulk order rather than after it.

The space cost is continuous and it is easy to ignore

Rent for a room full of vinegar is paid every month whether or not any of it is ready, and it is the cost most often left out because nothing about it feels like a production expense. Carry it as a monthly cost divided across what the space actually produces, and the economics of a slow product become visible rather than surprising.

References