Delayed inception (hasta)

"Not until" with hasta

In English, we use a negative sentence to say an action won't happen until a certain time. In many parts of Latin America, you express this same idea using an affirmative sentence with hasta (until) followed by a time expression. This shows that the action begins at that time.

We do not milk the cow until the morning.
Ordeñamos la vaca hasta la mañana.

Let's see this in action with the steps of traditional cheese making, from waiting for the milk to curdle (cuajar) to separating the curd (la cuajada) and the whey (el suero).

The milk does not curdle until noon.
La leche cuaja hasta el mediodía.
We do not separate the curd and the whey until tomorrow.
Separamos la cuajada y el suero hasta mañana.
I do not press the cheese until the afternoon.
Prenso el queso hasta la tarde.

You can easily contrast something happening right now with a delayed action using this same affirmative structure:

We salt the cheese today, but we do not age it until next month.
Salamos el queso hoy, pero lo añejamos hasta el próximo mes.