First, mix milk, sugar, salt, and tapioca in pan on Medium High. Bring to boil, wait another 7 minutes.
Reduce to simmer. Temper eggs with 1 cup of tapioca mixture. Add back to pan. Wait 5 minutes or until thickening (don’t wait until final desired thickness is reached because it will thicken more), add vanilla.
Let cool until it doesn’t burn your, or serve cold.