Phytolacca. In your part of the world Phytolacca octandra would be the likely one.

In the US it's called poke or pokeberry, and children like to play with the intensely coloured berries as ink. A friend of mine intentionally lets one grow in her Boston garden. It dies down to the ground in autumn and she cuts the dead stuff down. Spring bulbs come up densely all around it before it comes up, but later the poke plant gets to 6 or 8 feet (2 to 2.5 m) tall, and very healthy, lush, green, juicy looking, with those intense berries. A lot of little seedlings do come up but they are easily pulled, not deep-rooted.

I had to chime in! In the South (US) we call that a
poke sallet bush. Yes, it is edible, BUT only the leaves and for a limited
time. You have to find a plant early when the shoots (leaves) are new. Here’s
the rule "once it starts turning red, it will kill you dead". The
plant even has its own song "Poke Salad Annie". At one time you could
purchase pre-cooked poke sallet in a can at the grocery store.

It's
cooked much like you would cook turnip greens or collard greens. I have one of my grandmother's old cook books from the 1930's
and it has several recipes listed using poke "greens" Every bird
known around here eats the berries, because just when you get your car washed,
along comes a bird and poops purple on your car. As well as birds, raccoons, opossums
and foxes will eat the berries, Apparently they are immune to the toxic chemicals. Poke sallet bushes are deer- resistant. Some kids would eat a five to ten
berries on a dare. It didn't bother them, but they will turn your urine
and poop purple. If you ate a lot of berries I'm sure you would get a terrible
tummy ache. Native Americans used the roots to make a liquid and applied
it to the skin to stop itching. While I haven't kept up with the studies Poke sallet antiviral protein PAP has been isolated from the
plant. PAP is being tested to hinder the HIV virus in humans. It is being
studied for possible therapeutic use for T-cell leukemia, lymphoma, and
Hodgkin's lymphoma.

Why would anyone eat it?
Thanks to the critters that eat it then leave behind a poke seed, it’s multiplies
fast and is everywhere. Poke sallet became one of the
major food sources for the extremely poor living in the rural South. If you’re hungry and penniless, you’ll eat
just about anything.

Interesting! It sounds like the preparation is like kale.. we par boil that then fry with garlic and olive oil and lemon juice. Luckily for us kale, silverbeet, spinach, mustard etc are readily available, poke weed sounds a bit dicey! I think my plant is destined for the compost.

The preparation is much more complicated than kale since kale will not poison you even if you eat it raw. I would do a lot of research before even attempting to cook it. I believe you have to pick it very young, to boil it up several times and discard the cooking water.

yes, I should have said recipe, not preparation!

It's past compost ready!
Many will place a teaspoon of baking soda in with the greens and
bring it to a hard boil. Rinse, then cook with a slab of fatback