For the dough, first knead flour, butter in pieces, vodka, 6 tablespoons of ice-cold water and 1 teaspoon of salt until crumbly. Roll out the dough on some flour round (approx. 43 cm Ø). Line a greased large springform pan (32 cm Ø; approx. 6 cm high) with the dough at the bottom and sides, chill for approx. 30 minutes.
For the filling, clean and wash the zucchini, peppers, mushrooms, broccoli and beans. Halve the zucchini lengthwise and cut into slices. Cut the bell peppers into strips, halve the mushrooms. Cut broccoli into florets. Cook beans in boiling salted water for about 8 minutes, add broccoli florets after about 5 minutes and cook. Drain, rinse and drain well. Heat the oil in a large pan. Fry the peppers, zucchini and mushrooms for about 5 minutes, season with salt and pepper. Take them out and let them cool down.
Cover the dough with baking paper and spread dry peas on top. Bake blind in a hot oven (electric oven: 200 °C/circulating air: 180 °C/gas: see manufacturer) for approx. 15 minutes. Remove dry peas together with baking paper. Continue baking at the same temperature for about 5 minutes. Remove.
For the glaze, wash the thyme and remove the leaves. Mix sour cream, eggs and thyme. Season with salt, pepper and nutmeg.
Sprinkle the dough base with breadcrumbs. Dice ham, mix with vegetables and spread on the base. Pour over the top and bake in a hot oven (electric cooker: 180 °C/circulating air: 160 °C/gas: see manufacturer) for about 1 hour.
TIP - Why the VodkaTrick works: With alcohol the flour forms less gluten. Some of this gluten is necessary for the dough to stick, but too much makes it tough. Also works with gin, rum or whiskey.