Rashi on Exodus 30:35/רש"י על שמות ל׳:ל״ה

1ממלח TEMPERED TOGETHER — Understand this as the Targum renders it: מעורב, mixed — that they should thoroughly intermix the powder of the ingredients. I think that similar in meaning to it are the nouns in (Jona 1:5) “Then the mariners (המלחים) were afraid”; (Ezekiel 27:27) “thy mariners (מלחיך) and thy pilots”, who are so called because they turn over (stir up) the water with oars when they propel the ship — like a person who stirs up beaten eggs with a spoon in order to mix them with water. Anything that a person wishes to mix up thoroughly he stirs up with his finger or with a spoon.

2ממלח טהור קדש TEMPERED TOGETHER, PURE AND HOLY — i. e. tempered together shall it (the compound) be, pure shall it be, and holy shall it be.