This Seeking Tech guide will explain how you can unlock the Sake Flight trophy in Ghost of Yotei.
In order to do so, you need to collect 10 full sake jars. Empty jars do not count for the trophy.
Keep in mind that you won’t be able to collect a full jar if you are already carrying the maximum out. In that case, drink the same by holding the down directional button.
After collecting the 10th full sake jar, you should be able to unlock the Sake Flight trophy.