            milk: Vec::with_capacity(1),
            sugar: Vec::with_capacity(1),
        })
    }

    pub fn set_black_coffee(mut self) -> Self {
        self.0.sort = "Black".into();
        self
    }

    pub fn set_cubano_coffee(mut self) -> Self {
        self.0.sort = "Cubano".into();
        self.0.sugar.push(Sugar {
            sort: "Brown".into(),
        });