Arroz de Marisco

Arroz de Marisco is a Portuguese seafood rice dish where rice is the primary base ingredient and carbohydrate source. A standard serving contains approximately 45-60g of net carbs from rice alone, which meets or exceeds the entire daily carb allowance for ketogenic dieters. While the seafood components (shrimp, clams, mussels) are excellent keto proteins, and olive oil, garlic, onion, tomato, and white wine are minor contributors, rice is fundamentally incompatible with ketosis. There is no practical portion size that makes this dish keto-friendly while remaining a recognizable serving of the dish. The dish cannot be modified without losing its essential character.

Arroz de Marisco is a traditional Portuguese seafood rice dish built entirely around animal products. The primary protein is shrimp, and the dish also contains clams and mussels — all of which are seafood and therefore excluded under vegan dietary rules. There are no plant-based substitutes implied in this recipe, and the dish's identity is fundamentally defined by its seafood content. The remaining ingredients (rice, tomato, onion, garlic, white wine, cilantro, olive oil) are all plant-based, but they serve merely as supporting elements for the animal proteins.

Arroz de Marisco is disqualified primarily by its central ingredient: rice. Rice is a grain, and all grains are excluded from the paleo diet due to their anti-nutrient content (lectins, phytic acid) and absence from the Paleolithic food supply. While the seafood components (shrimp, clams, mussels) are excellent paleo proteins, and supporting ingredients like tomato, onion, garlic, cilantro, and olive oil are fully paleo-compliant, rice is not a minor or optional element here — it is the defining base of the dish. White wine is a minor caution (alcohol is debated), but it is not the disqualifying factor. The dish cannot be considered paleo in any mainstream interpretation due to rice being a non-negotiable grain exclusion.

Arroz de Marisco is fundamentally incompatible with the carnivore diet. While the seafood components (shrimp, clams, mussels) are carnivore-approved animal proteins, the dish is built around rice as its primary base — a grain that is strictly excluded on any tier of the carnivore diet. Beyond the rice, the recipe includes multiple plant-based ingredients: tomato, onion, garlic, cilantro, olive oil, and white wine. This dish is essentially a plant-heavy seafood rice stew, making it a clear avoid regardless of which carnivore protocol is followed.

Arroz de Marisco contains rice, which is explicitly excluded on the Whole30 program as a grain. Despite the seafood (shrimp, clams, mussels), vegetables (tomato, onion, garlic), and other ingredients (olive oil, cilantro, white wine) being compliant or acceptable, rice is a core, non-negotiable excluded ingredient. The dish cannot be made compliant without fundamentally changing its identity — rice is not an incidental ingredient but the defining base of this Portuguese seafood rice dish.

Arroz de Marisco contains three high-FODMAP ingredients that make it unsuitable during the elimination phase regardless of serving size. Onion is one of the highest-FODMAP foods tested by Monash University, containing significant fructans even in small amounts. Garlic cloves are similarly high in fructans and are rated 'avoid' at any culinary quantity. White wine contains fructose and can be problematic at typical serving amounts used in cooking. These three ingredients are structural to the dish — not optional garnishes — and cannot be present in low-FODMAP quantities in a standard preparation of this recipe. Rice, shrimp, clams, mussels, tomato (in moderate amounts), cilantro, and olive oil are all low-FODMAP and would otherwise make this dish a good candidate, but the onion and garlic alone disqualify it entirely during elimination phase.