I think the FEP system is lopsided towards certain stats the way it currently is. When it comes to agility, the only 'pure', guaranteed way of getting it up are Honey Buns and Roasted Rabbit - each giving ONE fep towards agility. Intelligence isn't much better, with the best pure option being perch - which give 2 fep. On the other hand, lamb sausages give SEVEN pure fep towards perception (carrot cakes give 5). Cow Chorizo, Bread, and Apple Pie are all good choices for constitution: giving 5, 3, and 5 respectively. Strength is one of the harder stats, but not impossible, using piglet wursts, which give 3 pure fep. Charisma is another easy one to raise, via eating raisin butter cakes. I think Intelligence and Agility both need a good pure option for raising. I just ran around making three running rabbit sausages and one roast rabbit, thinking it'd be a guaranteed agility point (81.25% chance in my favor), and ended up getting the intelligence point. I'm not complaining, really, as intelligence can be a slow one to raise as I don't live by the lake, but I was aiming for the agility and am disappointed that I now have to run around and redo everything I just did again, still with no guarantee that it will work. For the amount of time someone may invest in getting a point when they get to the higher levels, I think a guarantee is the least they could be offered.
EDIT: For reference.