Tomr's isn't ready to drink tonic, it's tonic water concentrate. Simply mix one ounce with club soda and your favorite spirt(s) and you've got yourself a delicious drink! We should probably mention that it's an all natural, organic tonic concentrate made using the bark of the cinchona tree, which is the original source for quinine and the source of its beautiful rust color. One taste and we know you'll be hooked. In stock and ready to ship. Features: 100% natural and organic. Use 1 oz of syrup per serving. Specs: Size: 750 ml (25.36 fl oz).