When I've been a bit low, I've tried everything to see what brings me back up quickly, but also doesn't send me too far the other way.
There's nothing quite so depressing as a low followed by a high, then everything begins to unravel.
In the end, I've found that Dextrosol tablets do the job very well. I know fairly accurately how much 1 tablet will raise my bs, so it's much easier not to overshoot. 1 tablet typically raises my bs by 0.7mmol/l, so 3.4mmol/l plus 2 dextrosol would get me to 4.8, 3 would get me to 5.5 etc etc.
Plus they taste fine, easy to carry around and last forever.
All the best,
fergusc