Discard chilling ice from coupe and strain cocktail into chilled glass. Using a vegetable peeler, remove a long peel of lemon. Express the oils over the cocktail, rub the peel around the glass rim, and place in the coupe.
For the table sauce referred to in some countries as tomato sauce, see Ketchup. Tomato sauce refers to any of a very large number of sauces made primarily from tomatoes, usually to be served as part of a dish (rather than as a condiment). Tomato sauces are common for meat and vegetables, but they are perhaps best known as sauces for pasta dishes. Tomatoes have a rich flavor, high liquid content, very soft flesh which breaks down easily, and the right composition to thicken into a sauce when they are cooked (without the need of thickeners such as roux).
Using a small paring knife, cut out the tough core of the tomato, then score the bottom. Set a large pot of water to boil; keep a cooler full of ice water nearby. Submerge the tomatoes in boiling water for 20 to 30 seconds, until the skins wrinkle and split. Remove them to the ice water. Depending on how many tomatoes you are processing, you may need several changes of ice water, as the hot tomatoes will quickly melt the ice.