I normally free feed Lilly, so she often has about a 2 day supply of food out for her. This is recommended for St. Bernards as if you have scheduled feedings, they tend to scarf the food down too fast and get bloat.
I had a French Dip for dinner and I had a little au jus left over, so I poured it on her food as a treat. She just scarfed down two days of food in 5 minutes. I'm going to watch her for the next few hours and make sure she doesn't get the signs of bloat. Assuming she's still fine in four-five hours or so I'm going to leave the back door open tonight so I don't wake up to any "surprises".