Dear friends,
I hope very much that you are fine.
I would love to suggest you a Russian summer drink, which is a bit specific for many foreigners ;-) But in my opnion kvas has the best refreshing taste for summer heat.
If you have a lot of stale bread left, you have to test this recipe.

Slice the larger pieces of bread thinly and let the bread roast in the oven until it`s completely dry and gives a strong smell of rye.
Put in a large utensil, pour over the boiling water. Dont`t mix. Let stand for at least 3 hours, or overnight (in a cool place).
Strain off the bread through a cloth, try not to disturb the bread too much, so it would not give off the gluten into the liquid.
Heat the liquid to a lukewarm, add the yeast, mint and berry juice and let stand for 6-8 hours approximately, covered with a towel. Kvas has to be monitored at this point. When a thin layer of bubbly froth appears on the surface, pour it into bottles through a cloth, drop a raisin into each bottle and cork the bottles well. Put into a cool place (2 C is best) for at least 2 days.