Fig. 2
From: Can Bulgarian Yogurt enhance astronauts’ performance during the Mars Missions?
Yogurt-making techniques applied during the Mars mission simulation project in Mars Analog Mission 268 station in Utah desert, USA. Only the first yogurt batch started with the lyophilized bacteria starter on the left and for the rest of the batches was followed the yogurt-making using the already made yogurt as a starter, a process described on the right