Are you looking for a briny sweetness from your mussels, as our food critic always does? Or is that a sweet brininess? Your sacred seafood quest has ended. Daddy Jack's in Deep Ellum serves these mollusks up right. Besides being tender and, yes, chewy, each little fella is coated in a tangy garlic-tomato sauce. When this appetizer is placed on a generous slice of sourdough bread, you can make a meal of it, unless you are forced to share with others, which makes eating alone an attractive alternative.