Limonana

For ➋
6 tbs (115 g) sugar
12 cl plus 6 tbs (9 cl) water, divided
12 cl fresh lemon juice
4 stems worth of mint leaves (about 40 leaves, which is about 2 g) with the stems discarded, plus a few extra sprigs for garnish if desired
18-20 ice cubes
1-2 drops orange blossom water (optional)

Add the sugar and 6 tbs of water to a small saucepan. Heat over medium heat, stirring constantly, until the sugar is dissolved. Cool to room temperature.
Add the cooled sugar syrup, remaining 12 cl water, lemon juice, mint leaves, ice cubes, and orange blossom water (if using) to a blender. Pulse a few times to break up the ice and then process until slushy.

Pour into 2 tall glasses, garnish with mint leaves if desired, and serve immediately.

Wikipedia on the name: In Israel, the name came from an advertising campaign conducted in the early 1990s. At that time, public-bus advertising was in its infancy in Israel. The Fogel Levin advertising agency undertook a bus-only campaign to prove the effectiveness of this new medium. Fogel Levin advertised a soft drink called Limonana and printed its ads through the Galgalei Zahav (Wheels of Gold) company. The ads, describing the drink as a blend of lemon and mint, reported, "Rabinowitz drinks Limonana" and, "Ohana drinks Limonana", referring to celebrities of the time. The ad campaign created a buzz[4] and consumers flocked to stores and kiosks to try the new flavor. Two weeks into the campaign, with consumers and stores clamoring for the product, the advertising agency admitted that no such drink existed. Spurred by customer demand, first restaurants and then soft drink manufacturers began to produce the flavor combination.