...Eggs - Separate the yolk & white by making a hole in the thinner end and letting the albumen slip through.  To stop your egg splitting when boiling, pierce one end with a pin to allow trapped air to escape.  A little vinegar in the water will help to stop the white spreading if the egg does split.

...Peel a tomato. Gentle Score a cross across the bottom of the tomato, then lower your tomato on a spoon into boiling water for 2-3 minutes, remove and plunge into ice cold water, the skin should peel off easily.  If you have a gas hob, skewer the tomato with a long fork or skewer (hold with a cloth!) then hold the tomato in the flame, turning it slowly until the skin blisters and splits, cool in ice water then the skin will just slide off.

...Get a whole brazil nut out of its shell instead of pieces. Keep them in the bottom drawer of the freezer. This will make the shell easier to crack.

...Make chopped nuts for your toppings etc.  Place them in a medium hot oven for 5 minutes to remove excess moisture,  they will be much easier to chop.

...Produce a non-soggy jacket potato in the microwave.  Stick toothpicks into the potato to give it ‘legs’ to strand on, then the air can circulate and the potato stays dry.  Mircowave on full power for 5-10 minutes depending on the size of potato and your microwaves wattage.