Olive oil ice cream sundaes.

for the olive oil ice cream:

milk, divided (2% or 1% works well here; see Notes)

cornstarch

heavy cream

sugar

light corn syrup

salt

your favorite olive oil, preferably fruitier or grassier with less of a peppery finish (the grassy California Olive Ranch "Rich & Robust" worked particularly well here)

cream cheese (Neufchatel works well here; see Notes)

for serving:

your favorite brownie recipe (I've included a few of mine in the Notes!)

flaky sea salt

extra olive oil for drizzling