In a medium saucepan, heat 2 tablespoons coconut oil (or extra-virgin olive oil) over medium-high heat until shimmering.
Add 1 cup rinsed and well-drained long-grain rice and stir to coat the grains in oil. Cook, stirring frequently, until the rice starts to turn lightly golden, about 3–5 minutes.
Add 1 minced garlic clove and stir for 30–60 seconds, until fragrant but not browned.
Pour in 1 1/2 cups filtered water and add 1/2 teaspoon fine sea salt. Increase heat just until the liquid comes to a gentle simmer.
Reduce the heat to low, cover the saucepan, and simmer gently until the water is absorbed and the rice is tender, about 18 minutes.
Remove the pan from the heat and keep it covered; let the rice rest for 10 minutes.
Remove the lid, fluff the rice with a fork, and transfer to a serving bowl. Add the zest of 1 lime, 1 tablespoon lime juice, and 1/2 cup (loosely packed) finely chopped cilantro. Toss gently to combine.
Taste and adjust seasoning, adding more lime juice and/or salt as desired.