Put the frozen spinach in a frying pan with the lid on medium heat. Stir from time to time until completely defrosted.
Mince the garlic cloves and add it in the pan along with the yogurt and the corn starch. Season with salt and pepper.
Stir and cook until completely boiled.
Tomatoes side
Preheat the oven at 190C.
Put the cherry tomatoes on a parchment paper in a baking tin and put in the oven for 20 mins.
Poached eggs
Put the water in a pot on medium heat. Leave there until it almost boils (this means that only small bubbles are detaching from the pot's bottom).
Add the vinegar to the water then break the eggs directly in the pot one by one (it helps if you create a gentle vortex with a spoon - this will make the white stick to the yolk).
When cooked on one side, the egg will rise to the surface of the water. Turn it on the other side and leave for 3 mins more.
Scoop out the eggs on a paper towel to drain completely
Serving
Toast the bread slices and cut them in half.
Put the spinach on top of the bread slice and the eggs on the spinach (one egg per half a bread slice).