It really does boil down to how you treat your hypos, fast acting glucose like fruit juice, jelly babies, glucogel can get you back up in around 10-15 minutes, if you're loading anything you can find in the kitchen into your system then they may not come up so quick. Test every 10 minutes if you're not coming up then repeat with fast acting glucose, once you start coming up then eat 10g of carb so a digestive biscuit or bag of crisps, i'd rather come up to say 10 mmol/l after a hypo to avoid a repeat, then correct.
I always say this with hypos - you need to know why you went low, it's an education to help you develop your knowledge so you don't repeat the episode. I develop a sixth sense with hypo's so I know when the alarm bells start ringing, like tonight at my daughter's carol service I ate pizza before I went just 2 small slices, took carbs but was rushing around and I knew I was going low as this was an unusual event so caught it before I went low - thank goodness, but it's always good to know what your triggers are.