Wet a kitchen towel and wring it out until just damp. Shape it into a ring and nestle a medium bowl in the center.

Finely grate the garlic into the bowl. Add the kosher salt and egg yolk, whisking briefly to combine.

Begin whisking the egg yolk mixture briefly, then slowly add the olive oil a few drops at a time.

Once all the oil is incorporated, whisk a few more times to finish the aioli and whisk in the fresh lemon juice.