diff -r 58c350f286e5 -r 9d2a4703bdac www/js/prod_edit.js
--- a/www/js/prod_edit.js	Wed May 08 22:23:52 2019 +0200
+++ b/www/js/prod_edit.js	Thu May 09 14:53:10 2019 +0200
@@ -304,6 +304,22 @@
 		$("#need_cells").val(getNeededYeastCells());
 	};
 
+	function calcMash() {
+
+		if (!(rows = $('#mashGrid').jqxGrid('getrows')))
+			return;
+		if (mashkg == 0)
+			return;
+
+		var infused = 0;
+		for (var i = 0; i < rows.length; i++) {
+			var row = $("#mashGrid").jqxGrid('getrowdata', i);
+			if (row.step_type == 0) // Infusion
+				infused += row.step_infuse_amount;
+			$("#mashGrid").jqxGrid('setcellvalue', i, "step_thickness", infused / mashkg);
+		}
+	}
+
 	/*
 	 * Change OG of recipe but keep the water volumes.
 	 */
@@ -2155,6 +2171,7 @@
 			calcIBUs();
 			calcWater();
 			calcSparge();
+			calcMash();
 		});
 		$('#boil_time').on('change', function (event) {
 			console.log("boil_time change:"+parseFloat(event.args.value)+" old:"+dataRecord.boil_time);
@@ -2186,6 +2203,7 @@
 			calcFermentablesFromOG(dataRecord.est_og);	// Adjust fermentables amounts
 			calcFermentables();                             // Update the recipe details
 			calcIBUs();                                     // and the IBU's.
+			calcMash();
 			calcYeast();
 		});
 		$('#mash_ph').on('change', function (event) {
@@ -3890,6 +3908,7 @@
                                 { name: 'step_infuse_amount', type: 'float' },
                                 { name: 'step_temp', type: 'float' },
                                 { name: 'step_time', type: 'float' },
+				{ name: 'step_thickness', type: 'float' },
                                 { name: 'ramp_time', type: 'float' },
                                 { name: 'end_temp', type: 'float' }
                         ],
@@ -3908,6 +3927,8 @@
                                         var row = records[i];
                                         if (row.step_type == 0)	// Infusion
                                                 mash_infuse += parseFloat(row.step_infuse_amount);
+					row.step_thickness = 0; // Init this field.
+					data.push(row);
                                 }
                         },
                 });
@@ -3937,6 +3958,7 @@
 					}
 					row["step_temp"] = 62.0;
 					row['step_time'] = 20.0;
+					row['step_thickness'] = 0;
 					row['ramp_time'] = 1.0;
 					row['end_temp'] = 62.0;
                                         var commit = $("#mashGrid").jqxGrid('addrow', null, row);
@@ -3954,6 +3976,7 @@
                         },
                         ready: function() {
                                 calcInit();
+				calcMash();
                                 $('#jqxLoader').jqxLoader('close');
                                 $('#jqxTabs').jqxTabs('first');
                         },
@@ -3969,6 +3992,7 @@
                                 { text: 'Rust min.', datafield: 'step_time', width: 90, align: 'right', cellsalign: 'right' },
                                 { text: 'Stap min.', datafield: 'ramp_time', width: 90, align: 'right', cellsalign: 'right' },
                                 { text: 'Infuse L.', datafield: 'step_infuse_amount', width: 90, align: 'right', cellsalign: 'right', cellsformat: 'f1' },
+				{ text: 'L/Kg.', datafield: 'step_thickness', width: 90, align: 'right', cellsalign: 'right', cellsformat: 'f2' },
 				{ text: '', datafield: 'Edit', columntype: 'button', width: 100, align: 'center', cellsrenderer: function () {
 					return "Wijzig";
 					}, buttonclick: function (row) {
@@ -4235,6 +4259,7 @@
 		// Recalc percentages
 		calcFermentables();
 		calcIBUs();
+		calcMash();
 		// Waters: yes there is impact.
 	});
 	$("#wf_name").jqxInput({ theme: theme, width: 320, height: 23 });
@@ -4310,6 +4335,7 @@
 			}
 			calcFermentables();
 			calcIBUs();
+			calcMash();
 		};
 	});
 	$("#wf_percentage").jqxNumberInput( Perc1dec );
@@ -4347,6 +4373,7 @@
 					}
 					calcFermentables();
 					calcIBUs();
+					calcMash();
 				} else {
 					// Adjust all the rows.
 					var nw = tw * diff / 100;
@@ -4366,6 +4393,7 @@
 					}
 					calcFermentables();
 					calcIBUs();
+					calcMash();
 				}
 			}
 		}
@@ -4409,6 +4437,7 @@
 			$("#fermentableGrid").jqxGrid('setcellvalue', fermentableRow, 'f_added', index);
 			calcFermentables();
 			calcIBUs();
+			calcMash();
 		}
 	});
 
@@ -4860,6 +4889,10 @@
 					row["step_infuse_amount"] = mash_infuse;
 				else
 					row["step_infuse_amount"] = 0;
+				if (mashkg > 0)
+					row['step_thickness'] = parseFloat(mash_infuse / mashkg);
+				else
+					row['step_thickness'] = 0;
 				row["step_temp"] = data.step_temp;
 				row["end_temp"] = data.end_temp;
 				row["step_time"] = data.step_time;
@@ -4882,6 +4915,7 @@
 	$("#MashReady").jqxButton({ template: "success", width: '90px', theme: theme });
 	$("#MashReady").click(function () {
 		$("#mashGrid").jqxGrid('sortby', 'step_temp', 'asc');
+		calcMash();
 	});
 	$("#wstep_name").jqxInput({ theme: theme, width: 320, height: 23 });
 	$("#wstep_name").on('change', function (event) {