Learn Spanish (Latin America): Separamos la cuajada y el suero hasta mañana. - We do not separate the curd and the whey until tomorrow.

This is a common feature in Mexican and Central American Spanish known as delayed inception. When you use an affirmative verb followed by hasta and a time expression (like mañana), it means the action won't start until that time. So, Separamos... hasta mañana is naturally understood as 'We do not separate it until tomorrow.'

Could I just say No separamos la cuajada y el suero hasta mañana instead?

Yes, absolutely! Adding the no is the standard way to express this across the entire Spanish-speaking world. The affirmative version without no in this sentence is a regional variation. It is highly common in parts of Latin America, so it is important to recognize it when natives speak to you, even if you prefer to use the negative form yourself.

Why use the present tense separamos instead of the future tense separaremos if the action happens tomorrow?

Just like in English, Spanish frequently uses the present tense to talk about scheduled, confident, or definite future events. Because the time marker mañana provides clear future context, using the present tense separamos sounds very natural and less formal than the future tense.

Since separamos is the same for nosotros in both the present and the past tense, could this sentence mean 'We did not separate...'?