Fish's Barbecued Oysters

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Details

13 Ingredients

• 1 tsp neutral-tasting olive oil
• 1/4 lb canned San Marzano tomatoes, drained
• 3 Tbsps minced white onion
• 5 garlic cloves
• 1 Tbsp kosher salt
• 2 Tbsps brown sugar
• 2 Tbsps cider vinegar
• 1/4 tsp Asian fish sauce
• 1 squeeze sriracha sauce
• 2 Tbsps freshly ground horseradish
• 1/4 lb (1 stick) organic unsalted butter
• 2 dozen fresh oysters (see note)
• Sourdough bread