In the muggy days approaching the official first day of Summer, our thoughts turn to warm weather cocktails. Annabelle Kressman, this week’s official co-taster, and I sipped Fonseca Siroco Extra Dry White Porto with Fever-Tree Indian Premium Tonic this week, thankfully in air-conditioned comfort.

White port, even the extra dry variety, is on the sweet side, slightly oaky, reminiscent of stone fruit and typically served chilled as an aperitif. It takes on a pleasantly citrus vibe when mixed with tonic, especially a tonic with a super clean edge like Fever-Tree.

It isn’t complicated to make. Fill a rocks glass with ice, mix the porto and tonic to taste, add a spritz of fresh lime and enjoy.

White port and tonic is a sophisticated blend and your guests might not be able to identify the potent potable unless you give them a hint. Or just tell them outright.

Annabelle’s pronouncement: “Refreshing, different, very summery. A thumb’s up.”

Fonseca Siroco has been around since the 1950s, a great era for cocktails, which makes it an authentic and unexpected choice for a retro-style get-together. The port has a budget-friendly price point of $19, which means you can splurge on the Fever-Tree, which will set you back about $5 and change for a four-pack of 6.8-ounce bottles.