English Porter Recipe - baby’s first porter

{"RecipeId":73457,"RecipeTypeId":10,"OriginalRecipeId":72874,"UnitType":"s","IbuFormula":"t","CreatedBy":118929,"Name":"baby’s first porter","Description":"50% RO, 50% A2 H2O. Strike with 2.8 gal. Add 1g Ca(OH)2 to mash. Target 154F. Acidify 5 gal sparge water to 5.20 pH. Add 4g CaSO4 to kettle. Copper up to 6.5gal, boil 60 minutes. Add invert@5 min before EOB. KO@ 66F. ","ImageUrlRoot":null,"StyleId":"13C","StyleName":"English Porter","BatchSize":5,"BoilSize":6.5,"BoilTime":60,"Efficiency":0.75,"DateCreated":"\/Date(1566087500363)\/","BrewSessionCount":1,"MostRecentBrewSession":15326,"Og":1.05433,"Fg":1.0124959,"Srm":37.619680575823615,"Ibu":49.803427047118149,"BgGu":0.91668372993039127,"Abv":5.3965989,"Calories":181,"AverageRating":0,"TastingNoteCount":0,"Fermentables":[{"Per":"78","Amt":"7.5","Ppg":"38","L":"3","Use":"Mash","Id":"390369","IngId":"15","Name":"Maris Otter Pale - UK","CustomName":"","Rank":"2"},{"Per":"9","Amt":"0.9","Ppg":"28","L":"500","Use":"Mash","Id":"390374","IngId":"482","Name":"Black Malt - UK","CustomName":"","Rank":"4"},{"Per":"5","Amt":"0.5","Ppg":"32","L":"27","Use":"Mash","Id":"390375","IngId":"29","Name":"Amber - UK","CustomName":"","Rank":"6"},{"Per":"8","Amt":"0.75","Ppg":"36","L":"70","Use":"Late","Id":"393484","IngId":"543","Name":"Invert Sugar - US","CustomName":"","Rank":"8"}],"Hops":[{"Amt":"2","Type":"Leaf","Use":"Boil","Min":"15","Day":"0","AA":"3.9","Ibu":"12.8630890218515","Id":"416797","IngId":"64","Name":"Willamette ","CustomName":"","Rank":"1"},{"Amt":"2.85","Type":"Leaf","Use":"Boil","Min":"60","Day":"0","AA":"3.9","Ibu":"36.9403380252667","Id":"418418","IngId":"64","Name":"Willamette ","CustomName":"","Rank":"2"}],"Yeasts":[{"Atten":"0.77","Id":"109090","IngId":"233","Name":"Wyeast London Ale III 1318","CustomName":"","Rank":"1"}],"Others":[],"MashSteps":[],"Steps":[]}