I tried this earlier in the week with Campari as is called for, but felt it was too bitter. So I took another run with Aperol which for sure is a lot sweeter. In the end it was maybe a little too sweet. Hence the modified version below with a split aperitif.
East India Negroni
2 oz Rum (Denizen White)
1 oz Sherry (Harvey’s Bristol Creme)
½ oz Aperol
¼ oz Campari
Shake with ice and strain. Garnish with orange peel.