Perfectly cooked, juicy, slow roasted salmon with a buttery, tangy sauce. Delicious and versatile for any meal and occasion. Intermediate-the technique of slow roasting salmon is perfect for beginners. Combined with preparing asparagus as a side dish makes this an intermediate recipe. Please read the post for the work flow and for tips on making this meal quickly and easily. (only preparing salmon is easy for beginners)us based cup, teaspoon, tablespoon measurements. Common measurement conversions.