Holy basil typically refers to the plant with the scientific name Ocimum tenuiflorum, previously Ocimum sanctum. What we call “garden basil” or “sweet basil” is Ocimum basilicum. The flavor profile for holy basil reminds some people of peppery cloves. Many compare the flavor of sweet basil to that of licorice (but still with an element of cloves). So, take taste differences into account before making substitutions in your recipes.