What's the fastest way to hull a strawberry? I often need to hull and slice large batches of strawberries.  But hulling by cutting a cone out of the top of the berry with a paring knife can be slow work.  How can I quickly remove the core (the hard white part near the stem) from the strawberry?

What do professional chefs and kitchens do to quickly hull strawberries?
I don't usually hull strawberries, but when I do I use a straw. The idea is that you push the straw up through the tip of the strawberry and it comes out at the stem. For pictures you can see http://amy-newnostalgia.blogspot.com/2010/06/hulling-strawberries-with-straw.html are just Google "hull strawberries with a straw"