On Thursday, December 26, 2019 at 12:19:20 PM UTC-5, Hawk wrote:
I'm adding an outlet about 5 feet from an existing circuit and teeing
from from an outlet in that circuit. I can't recall how I should connect
the the new out/wire to the existing outlet. Is it better to run from
the existing to the new and loop back to continue the run or to add a
single run to the new outlet from the existing outlet and piggy back
using shorter wires and wire nut?

No idea what you're talking about with running anything back.
To add a new outlet you'd run one new romex cable from the existing
box to the new one.