Vegan lemon and blackberry pound cake

Name: Vegan lemon and blackberry pound cake
Prep time: 10 min
Cook time: 50 min
Total time: 1 h
Cuisine: European, British
Ingredients: 1 large lemon juiced and zest; 250 ml plant milk; 250 ml water; 65 gram (½ cup) unrefined sugar; 60 gram (⅓ cup) rapeseed oil; 200 grams (1½cups + 3 tbsp) wholegrain spelt flour; 200 grams (1 cup) oat flour; 16 grams (3 ½ tsp) baking powder; 250 grams (1⅔ cup) blackberries; 100 grams (½ cup) icing sugar; 2 tbsp plant milk; 2 tbsp lemon juice