have (something) down to a science(redirected from having down to a science)
have (something) down to a science
To learn, master, or understand something perfectly, to the point of requiring little or no focus to do, recall, or accomplish it. I had my routine down to a science so there wouldn't be any room for error during the performance. I'm a working mom of three, so I have lunch-making down to a science—I put out all the pieces of bread, add jelly to each one, and then do the same with peanut butter.