There's no reason to save Tuna Steaks for eating out, make them yourself for a gourmet restaurant experience in the comfort of your home. Not only are they full of healthy nutrients, they are delicious and a real treat any day of the week.
In a mixing bowl, combine your water, lemon juice, soy sauce, sesame oil, cardamom, thyme, and minced garlic. Mix until well combined.
Pour your marinade into a large plastic bag and place your tuna steaks in the bag with the marinade. Push out as much air as you can and thoroughly coat the steaks in the marinade.
Allow the tuna steaks to marinate for 20 minutes at room temperature.
Heat a skillet over medium high heat, once the steaks are marinated and ready, remove them from the bag and place them on the heated skillet, cook each side for about 2 minutes. Brush the steaks with more of the marinade as they cook to add more flavor.
Once you have cooked both sides of each steak remove them from the skillet, the internal temperature should reach 125 degrees fahrenheit. Allow them to rest for 2 minutes, they will continue to cook while they rest.