DuckDB fails with WHERE condition using double quotes

CREATE TABLE invoice (
id UUID DEFAULT(uuid()) PRIMARY KEY,
product VARCHAR(64),
amount DECIMAL(12,2),
sold_at TIMESTAMP ) ENGINE=DuckDB DEFAULT CHARSET utf8mb4;

INSERT INTO invoice (product, amount, sold_at)
VALUES ('MariaDB mug', 12.00, NOW()),
('DuckDB sticker', 2.50, NOW()),
('Sea lion plush', 25.00, NOW()),
('DuckDB sticker', 2.50, NOW());

SELECT id, product, amount FROM invoice WHERE product = "MariaDB mug";

SQL Error [1296] [HY000]: (conn=23427) Got error 122 'Binder Error: Referenced column "MariaDB mug" not found in FROM clause!
Candidate bindings: "id"

LINE 1: SELECT id, product, amount FROM invoice WHERE product = "MariaDB mug"
' from DuckDB