You can build a reservoir of it, and use to feed animals - and people for that matter. Since you already have a constant endless flow, if you set it into pipes you will need no pumps to deliver the its boring flavour to where it is needed.
Of course, build turbines and generate electricity from it.
More importantly, build a
aquaduct Lablabiduct to take it to everybody's home. Your ducts require maintenance, and you have to pay for the constructions... so, it would make sense to charge for the service. Except the wife is against it, so get a deal with the goverment so they pay for the operation and you can deliver free food.
Futhermore, Lablabi is what everyone needs. It is orgnaic metter, it should be possible to convert it to be used as lubricant, fertilizer or fuel - without the cost of oil prospecting. Soon you will have cars that run on Lablabi byproduts. Lablabi should proably be kept for food, the burn of Lablabi byproducts would contribute to climate change. Also any Lablabi used for industrial products, is Lablabi not eaten. Goverment regulation is needed.
Originally I was thinking that Lablabi could be an export and help economic development of the country. Also that it would quickly imply changes in the labor policy to institute mandatory work hours when peope no longer need to work for food... but the Lablabli flow doens't seem to be enough to allow those conditions.
But once eaten, Lablabi is not gone. Oh, no! far from it! From where is all this mass coming? You are adding mass to Earth!
Thankfully the the bigger - long term - problem is slow enough for the human race to rise and fall. Still, I like the idea of exploring what happen when you add these extra mass to the planet.
If we assume that the density of Lablabi is 1g/cm^3 (like water), the volumetric flow of 5m^3/s is a mass flow of 5000 kg/s. As curious note, this is about 0.74 times the trash production of United States, according to Wolfram|Alpha.
- Each second: The added mass is 5000 kg. The ratio to current Earth's mass is 1:1.1944397x10^21
- Each year: The added mass is 1.575x10^11 kg. The ratio to current Earth's mass is 1:3.792x10^13.
- Each 500 years: The added mass is 7.875x10^13 kg. The ratio to current Earth's mass is 1:7.584x10^10. This is about 0.98 of current Earth's biomass
Increasing the mass of Earth will increase its gravitational attraction. Currently the moon is slowly moving away from Earth this could be reversed. The moon would appear larger in the night sky, the nights would be brighter... tidal waves would be stronger! The rate at which dates become shorter would accelerate.
It doens't seem to become more interesting after millions of years, after about one hundred billion (short scale) years, the added mass will compete with that of the moon. If humans are around they should be looking for space-bound solutions.
If we assume that technological advancement continues as the humanity leaves earth, the Lablabi pot could be at the center of their space habitat. Humankind would become Type Lablabi civilization, no longer constrained by the resources of their home planet, but not yet to the point to build a Dyson sphere.
As humanity becomes a Type III civilization it could resource to throw the pot to a black hole (assuming they hasn't allowed it to become one at that point) or give it to some alien race where somebody's wife makes a wish to feed homeless infants.