If one dreams about eating egg yolk, then it is usually a sign of misfortune, unless the dreamer changes his current way of life. If, during the dream, the yolk spreads out, then it tends to be a clear announcement of upcoming professional or academic successes.
Dream dictionary: egg yolk dream meanings
If you dream about the yolk from the egg, then such dream indicates the desire to get deeper into some situation and find the real true that lies beneath everything.
In small numbers represents some kind of profit and/or gain. In large quantities, loss and disappointments. White, trivial superiorities. Colored or hard, great vexation. Cracked eggs symbolize annoyances, idle talk. To be besmeared with the yolk of an egg, humiliation.