Stir, strain into a chimney over fresh ice and bubbles, drop in orange slice and fruit in season, serve with straw. Garnish with lemon wedge and squeeze in to taste.
Takes very well to variations: muddled berries, cucumber, different lengtheners (strawberry lambic would be good). Makes a good cobbler. Add an ounce of gin or tequila to make a good Negroni (or Negroni Swizzle) variant.