Place half of the strawberries in a large bowl; cover with 1-cup of sugar.
Add the remaining strawberries and sprinkle with the rest of the sugar.
Cover the bowl and place in the fridge for 24 hours.
Transfer the berries and the juice into a large saucepan.
Over medium-high heat, bring the mixture to a boil; turn the heat down and continue to simmer for 30 minutes.
Remove from heat and strain the mixture through a fine mesh strainer into a large bowl.
Using a spatula, press the strawberries to release all the juices.
In the meantime, preheat oven to 170.
Wash the glass bottle; place it on a baking sheet and put it in the oven for 30 minutes.
Sterilize the cap of the bottle by placing it in a bowl and pour boiling water right over it.
Remove glass bottle from the oven.
Pour the juice into the bottle.
Seal with the cap and let completely cool.
Store in refrigerator.