Heinz exploded onto the ketchup scene nearly 150 years ago, which means ketchup has been exploding onto our hot dogs, French fries, and faces in unpredictable gobs for that long, too. Now, the condiment colossus has finally shared the secret to unlocking smooth, scarlet streams of tomato sauce without all the mess.

A Heinz Canada spokesperson told Food & Wine that the perfect angle is between 35 and 45 degrees, so you should hold your bottle a little closer to a horizontal position than a vertical one. For those of you with questionable angle-estimation skills, Heinz Canada partnered with a creative agency called Rethink Canada to come up with an interactive cheat sheet—a line of bottles on which the Heinz ketchup label is tilted downward when the bottle is upright. Tip your bottle until the label is exactly vertical, and there’s your perfect pouring angle. One note: You must hold the bottle in your right hand in order for the trick to work (Sorry, left-handers).

“We’re always thinking of fun, cheeky ways we can highlight the iconic and timeless nature of the product to give our consumers a smile,” Brian Neumann, senior brand manager at The Kraft Heinz Company Canada, told AdAge.

Right now, the geometrically labeled bottles are only available in Toronto, so you’ll have to rely on your eyes or your pocket protractor if you can’t wait to impress your friends with the spurt-less ketchup tutorial of their dreams.

And you can pair your demonstration with an explanation of why the beloved condiment is so dang hard to pour in the first place; in short, it’s a non-Newtonian fluid, so its viscosity changes depending on how hard, how long, and how fast force is applied to it. More on that—plus some other helpful tips on how to pour it like a pro—here.

[h/t Food & Wine]