Now it's time to mix the mortar. We have taken sand and cement from our store, so we have to add water now. Not too much water, otherwise the stones will float away and the mortar will not solidify properly. On the other hand, too little water is not good, otherwise the mortar does not stick to the stone and we can align the stones badly.

With the right consistency the walls can be build easier.

At last the mortar is ready for use.

Look at the principle of mixing the mortar by hand.