Salt is the essential minimum — flavor's foundation, the preservative, the covenant mineral ('salt of the earth'). Without it, everything is flat; too much, and nothing else can be tasted. Dream-salt concerns life's essential savor and what preserves against decay.
Positive Resonance
Essential flavor, preservation, the covenant kept, worth ('worth one's salt')
Shadow Aspect
Life gone flat (unsalted), the wound salted, tears' taste
Nuances
Food without salt: life's flavor missing
Spilling salt: the old omen — care with the essential